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30980869220 = 2257221291923
BaseRepresentation
bin11100110110100110…
…101000110001100100
32221222002222012222202
4130312212220301210
51001422100303340
622122111314032
72144510020610
oct346646506144
987862865882
1030980869220
1112158990654
12600751b918
132bc96646a2
1416dc816340
15c14ccbc15
hex7369a8c64

30980869220 has 24 divisors (see below), whose sum is σ = 74354086464. Its totient is φ = 10622012256.

The previous prime is 30980869123. The next prime is 30980869247. The reversal of 30980869220 is 2296808903.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 110645822 + ... + 110646101.

It is an arithmetic number, because the mean of its divisors is an integer number (3098086936).

Almost surely, 230980869220 is an apocalyptic number.

It is an amenable number.

30980869220 is an abundant number, since it is smaller than the sum of its proper divisors (43373217244).

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

30980869220 is a wasteful number, since it uses less digits than its factorization.

30980869220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221291939 (or 221291937 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 30980869220 in words is "thirty billion, nine hundred eighty million, eight hundred sixty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 221291923 442583846 885167692 1106459615 1549043461 2212919230 3098086922 4425838460 6196173844 7745217305 15490434610 30980869220