30939948 has 48 divisors (see below), whose sum is σ = 86388960. Its totient is φ = 9519552.

The previous prime is 30939929. The next prime is 30939967. The reversal of 30939948 is 84993903.

It is an interprime number because it is at equal distance from previous prime (30939929) and next prime (30939967).

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, 9615 + ... + 12422.

It is an arithmetic number, because the mean of its divisors is an integer number (1799770).

Almost surely, 2^30939948 is an apocalyptic number.

It is an amenable number.

30939948 is an abundant number, since it is smaller than the sum of its proper divisors (55449012).

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

30939948 is a wasteful number, since it uses less digits than its factorization.

30939948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22063 (or 22055 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 30939948 is about 5562.3689198039. The cubic root of 30939948 is about 313.9350887500.

It can be divided in two parts, 3093 and 9948, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 30939948 in words is "thirty million, nine hundred thirty-nine thousand, nine hundred forty-eight".