30788190 has 48 divisors (see below), whose sum is σ = 84762288. Its totient is φ = 7726848.

The previous prime is 30788167. The next prime is 30788203. The reversal of 30788190 is 9188703.

It is a super-2 number, since 2×30788190² = 1895825286952200, 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 23 ways as a sum of consecutive naturals, for example, 8532 + ... + 11591.

It is an arithmetic number, because the mean of its divisors is an integer number (1765881).

Almost surely, 2^30788190 is an apocalyptic number.

30788190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30788190 is an abundant number, since it is smaller than the sum of its proper divisors (53974098).

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

30788190 is a wasteful number, since it uses less digits than its factorization.

30788190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20153 (or 20150 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 30788190 is about 5548.7106610455. The cubic root of 30788190 is about 313.4209716628.

The spelling of 30788190 in words is "thirty million, seven hundred eighty-eight thousand, one hundred ninety".