30813928250 has 128 divisors (see below), whose sum is σ = 68666158080. Its totient is φ = 10130400000.

The previous prime is 30813928247. The next prime is 30813928261. The reversal of 30813928250 is 5282931803.

It is a super-2 number, since 2×30813928250² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30813928198 and 30813928207.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7661240 + ... + 7665260.

It is an arithmetic number, because the mean of its divisors is an integer number (536454360).

Almost surely, 2^30813928250 is an apocalyptic number.

30813928250 is an abundant number, since it is smaller than the sum of its proper divisors (37852229830).

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

30813928250 is a wasteful number, since it uses less digits than its factorization.

30813928250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225 (or 4215 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 30813928250 in words is "thirty billion, eight hundred thirteen million, nine hundred twenty-eight thousand, two hundred fifty".