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30180480 = 2735111429
BaseRepresentation
bin111001100100…
…0010010000000
32002210022211120
41303020102000
530211233410
62554512240
7514346511
oct163102200
962708746
1030180480
1116044050
12a135680
136339195
144018a08
1529b2570
hex1cc8480

30180480 has 128 divisors (see below), whose sum is σ = 105019200. Its totient is φ = 7311360.

The previous prime is 30180461. The next prime is 30180487. The reversal of 30180480 is 8408103.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×301804802 = 1821722746060800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30180480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30180487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20406 + ... + 21834.

Almost surely, 230180480 is an apocalyptic number.

30180480 is a gapful number since it is divisible by the number (30) 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 30180480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52509600).

30180480 is an abundant number, since it is smaller than the sum of its proper divisors (74838720).

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

30180480 is a wasteful number, since it uses less digits than its factorization.

30180480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 30180480 is about 5493.6763646942. The cubic root of 30180480 is about 311.3451089162.

Adding to 30180480 its reverse (8408103), we get a palindrome (38588583).

The spelling of 30180480 in words is "thirty million, one hundred eighty thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 80 88 96 110 120 128 132 160 165 176 192 220 240 264 320 330 352 384 440 480 528 640 660 704 880 960 1056 1320 1408 1429 1760 1920 2112 2640 2858 3520 4224 4287 5280 5716 7040 7145 8574 10560 11432 14290 15719 17148 21120 21435 22864 28580 31438 34296 42870 45728 47157 57160 62876 68592 78595 85740 91456 94314 114320 125752 137184 157190 171480 182912 188628 228640 235785 251504 274368 314380 342960 377256 457280 471570 503008 548736 628760 685920 754512 914560 943140 1006016 1257520 1371840 1509024 1886280 2012032 2515040 2743680 3018048 3772560 5030080 6036096 7545120 10060160 15090240 30180480