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30916214780 = 22511140528249
BaseRepresentation
bin11100110010101111…
…111111111111111100
32221210121022102202212
4130302233333333330
51001304022333110
622111441435552
72143063326653
oct346257777774
987717272685
1030916214780
1112125440830
125ba993bbb8
132bb9148019
1416d3dc619a
15c0e2a9e05
hex732bffffc

30916214780 has 24 divisors (see below), whose sum is σ = 70826238000. Its totient is φ = 11242259840.

The previous prime is 30916214731. The next prime is 30916214783. The reversal of 30916214780 is 8741261903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30916214783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70263905 + ... + 70264344.

It is an arithmetic number, because the mean of its divisors is an integer number (2951093250).

Almost surely, 230916214780 is an apocalyptic number.

It is an amenable number.

30916214780 is an abundant number, since it is smaller than the sum of its proper divisors (39910023220).

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

30916214780 is a wasteful number, since it uses less digits than its factorization.

30916214780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140528269 (or 140528267 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 30916214780 in words is "thirty billion, nine hundred sixteen million, two hundred fourteen thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 140528249 281056498 562112996 702641245 1405282490 1545810739 2810564980 3091621478 6183242956 7729053695 15458107390 30916214780