Search a number
-
+
971488080 = 24345149921
BaseRepresentation
bin111001111001111…
…011101101010000
32111201000201010000
4321321323231100
53442200104310
6240222210000
733034340523
oct7171735520
92451021100
10971488080
1145941a412
12231423900
13126366624
1493048bba
155a44d4c0
hex39e7bb50

971488080 has 100 divisors (see below), whose sum is σ = 3374144532. Its totient is φ = 259061760.

The previous prime is 971488051. The next prime is 971488109. The reversal of 971488080 is 80884179.

971488080 is a `hidden beast` number, since 97 + 1 + 488 + 0 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (971488051) and next prime (971488109).

It can be written as a sum of positive squares in 2 ways, for example, as 438986304 + 532501776 = 20952^2 + 23076^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 68481 + ... + 81440.

Almost surely, 2971488080 is an apocalyptic number.

971488080 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

971488080 is an abundant number, since it is smaller than the sum of its proper divisors (2402656452).

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

971488080 is a wasteful number, since it uses less digits than its factorization.

971488080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149946 (or 149931 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 971488080 is about 31168.7035341543. The cubic root of 971488080 is about 990.4042426283.

The spelling of 971488080 in words is "nine hundred seventy-one million, four hundred eighty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 216 240 270 324 360 405 432 540 648 720 810 1080 1296 1620 2160 3240 6480 149921 299842 449763 599684 749605 899526 1199368 1349289 1499210 1799052 2248815 2398736 2698578 2998420 3598104 4047867 4497630 5397156 5996840 6746445 7196208 8095734 8995260 10794312 11993680 12143601 13492890 16191468 17990520 20239335 21588624 24287202 26985780 32382936 35981040 40478670 48574404 53971560 60718005 64765872 80957340 97148808 107943120 121436010 161914680 194297616 242872020 323829360 485744040 971488080