30939000 has 64 divisors (see below), whose sum is σ = 96539040. Its totient is φ = 8249600.

The previous prime is 30938989. The next prime is 30939001. The reversal of 30939000 is 93903.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30939001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2157 + ... + 8156.

Almost surely, 2^30939000 is an apocalyptic number.

30939000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30939000 is an abundant number, since it is smaller than the sum of its proper divisors (65600040).

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

30939000 is a wasteful number, since it uses less digits than its factorization.

30939000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10337 (or 10323 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 24.

The square root of 30939000 is about 5562.2837036599. The cubic root of 30939000 is about 313.9318823936.

The spelling of 30939000 in words is "thirty million, nine hundred thirty-nine thousand".