30981804 has 48 divisors (see below), whose sum is σ = 82983936. Its totient is φ = 8812800.

The previous prime is 30981793. The next prime is 30981827. The reversal of 30981804 is 40818903.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22084 + ... + 23444.

It is an arithmetic number, because the mean of its divisors is an integer number (1728832).

Almost surely, 2^30981804 is an apocalyptic number.

It is an amenable number.

30981804 is an abundant number, since it is smaller than the sum of its proper divisors (52002132).

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

30981804 is a wasteful number, since it uses less digits than its factorization.

30981804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 30981804 is about 5566.1300739383. The cubic root of 30981804 is about 314.0765902394.

The spelling of 30981804 in words is "thirty million, nine hundred eighty-one thousand, eight hundred four".