Search a number
-
+
471163680 = 253251325169
BaseRepresentation
bin11100000101010…
…110001100100000
31012211120121001200
4130011112030200
51431104214210
6114430401200
714450553021
oct3405261440
91184517050
10471163680
11221a61279
12111960200
13767c99a0
144680ac48
152b56e0c0
hex1c156320

471163680 has 144 divisors (see below), whose sum is σ = 1731595320. Its totient is φ = 115974144.

The previous prime is 471163669. The next prime is 471163703. The reversal of 471163680 is 86361174.

471163680 is a `hidden beast` number, since 4 + 7 + 11 + 636 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 231161616 + 240002064 = 15204^2 + 15492^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×4711636802 = 443990426702284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6136 + ... + 31304.

Almost surely, 2471163680 is an apocalyptic number.

471163680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 471163680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865797660).

471163680 is an abundant number, since it is smaller than the sum of its proper divisors (1260431640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

471163680 is a wasteful number, since it uses less digits than its factorization.

471163680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203 (or 25192 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 471163680 is about 21706.3050747934. The cubic root of 471163680 is about 778.1391538530.

The spelling of 471163680 in words is "four hundred seventy-one million, one hundred sixty-three thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 32 36 39 40 45 48 52 60 65 72 78 80 90 96 104 117 120 130 144 156 160 180 195 208 234 240 260 288 312 360 390 416 468 480 520 585 624 720 780 936 1040 1170 1248 1440 1560 1872 2080 2340 3120 3744 4680 6240 9360 18720 25169 50338 75507 100676 125845 151014 201352 226521 251690 302028 327197 377535 402704 453042 503380 604056 654394 755070 805408 906084 981591 1006760 1132605 1208112 1308788 1510140 1635985 1812168 1963182 2013520 2265210 2416224 2617576 2944773 3020280 3271970 3624336 3926364 4027040 4530420 4907955 5235152 5889546 6040560 6543940 7248672 7852728 9060840 9815910 10470304 11779092 12081120 13087880 14723865 15705456 18121680 19631820 23558184 26175760 29447730 31410912 36243360 39263640 47116368 52351520 58895460 78527280 94232736 117790920 157054560 235581840 471163680