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30371911880 = 2352055136947
BaseRepresentation
bin11100010010010011…
…101001100011001000
32220101200002222120012
4130102103221203020
5444200202140010
621541435251052
72123433664022
oct342223514310
986350088505
1030371911880
1111976174a22
125a775a9a88
132b304509bb
1416819bb012
15bcb5e0005
hex7124e98c8

30371911880 has 32 divisors (see below), whose sum is σ = 68341976640. Its totient is φ = 12147844800.

The previous prime is 30371911847. The next prime is 30371911909. The reversal of 30371911880 is 8811917303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803567 + ... + 840513.

It is an arithmetic number, because the mean of its divisors is an integer number (2135686770).

Almost surely, 230371911880 is an apocalyptic number.

It is an amenable number.

30371911880 is an abundant number, since it is smaller than the sum of its proper divisors (37970064760).

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

30371911880 is a wasteful number, since it uses less digits than its factorization.

30371911880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57509 (or 57505 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 30371911880 in words is "thirty billion, three hundred seventy-one million, nine hundred eleven thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 20551 36947 41102 73894 82204 102755 147788 164408 184735 205510 295576 369470 411020 738940 822040 1477880 759297797 1518595594 3037191188 3796488985 6074382376 7592977970 15185955940 30371911880