30768390 has 32 divisors (see below), whose sum is σ = 82049760. Its totient is φ = 8204832.

The previous prime is 30768383. The next prime is 30768401. The reversal of 30768390 is 9386703.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 56709 + ... + 57248.

It is an arithmetic number, because the mean of its divisors is an integer number (2564055).

Almost surely, 2^30768390 is an apocalyptic number.

30768390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30768390 is an abundant number, since it is smaller than the sum of its proper divisors (51281370).

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

30768390 is a wasteful number, since it uses less digits than its factorization.

30768390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113973 (or 113967 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30768390 is about 5546.9261758203. The cubic root of 30768390 is about 313.3537698556.

The spelling of 30768390 in words is "thirty million, seven hundred sixty-eight thousand, three hundred ninety".