30930888 has 64 divisors (see below), whose sum is σ = 83669760. Its totient is φ = 9491456.

The previous prime is 30930881. The next prime is 30930943. The reversal of 30930888 is 88803903.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30930881) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18370 + ... + 19982.

It is an arithmetic number, because the mean of its divisors is an integer number (1307340).

Almost surely, 2^30930888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30930888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41834880).

30930888 is an abundant number, since it is smaller than the sum of its proper divisors (52738872).

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

30930888 is a wasteful number, since it uses less digits than its factorization.

30930888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686 (or 1682 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 30930888 is about 5561.5544589620. The cubic root of 30930888 is about 313.9044430448.

The spelling of 30930888 in words is "thirty million, nine hundred thirty thousand, eight hundred eighty-eight".