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30280620804 = 2237536801577
BaseRepresentation
bin11100001100110111…
…011001101100000100
32220011022022220202020
4130030313121230010
5444003314331204
621524414443140
72121245013210
oct341467315404
986138286666
1030280620804
1111929691655
125a50b034b0
132b17569205
141673815940
15bc35aabd9
hex70cdd9b04

30280620804 has 48 divisors (see below), whose sum is σ = 82271887488. Its totient is φ = 8488366848.

The previous prime is 30280620781. The next prime is 30280620833. The reversal of 30280620804 is 40802608203.

It is a super-3 number, since 3×302806208043 (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3396337 + ... + 3405240.

It is an arithmetic number, because the mean of its divisors is an integer number (1713997656).

Almost surely, 230280620804 is an apocalyptic number.

It is an amenable number.

30280620804 is an abundant number, since it is smaller than the sum of its proper divisors (51991266684).

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

30280620804 is a wasteful number, since it uses less digits than its factorization.

30280620804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801644 (or 6801642 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

It can be divided in two parts, 302806 and 20804, that added together give a triangular number (323610 = T804).

The spelling of 30280620804 in words is "thirty billion, two hundred eighty million, six hundred twenty thousand, eight hundred four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 53 84 106 159 212 318 371 636 742 1113 1484 2226 4452 6801577 13603154 20404731 27206308 40809462 47611039 81618924 95222078 142833117 190444156 285666234 360483581 571332468 720967162 1081450743 1441934324 2162901486 2523385067 4325802972 5046770134 7570155201 10093540268 15140310402 30280620804