30856190 has 64 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 10690560.

The previous prime is 30856169. The next prime is 30856201. The reversal of 30856190 is 9165803.

It is a super-2 number, since 2×30856190² = 1904208922632200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132314 + ... + 132546.

It is an arithmetic number, because the mean of its divisors is an integer number (995085).

Almost surely, 2^30856190 is an apocalyptic number.

30856190 is an abundant number, since it is smaller than the sum of its proper divisors (32829250).

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

30856190 is a wasteful number, since it uses less digits than its factorization.

30856190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 30856190 is about 5554.8348310278. The cubic root of 30856190 is about 313.6515465972.

The spelling of 30856190 in words is "thirty million, eight hundred fifty-six thousand, one hundred ninety".