30837972 has 24 divisors (see below), whose sum is σ = 78496992. Its totient is φ = 9344800.

The previous prime is 30837967. The next prime is 30837977. The reversal of 30837972 is 27973803.

It is an interprime number because it is at equal distance from previous prime (30837967) and next prime (30837977).

It is a self number, because there is not a number n which added to its sum of digits gives 30837972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30837977) 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 7 ways as a sum of consecutive naturals, for example, 116679 + ... + 116942.

It is an arithmetic number, because the mean of its divisors is an integer number (3270708).

Almost surely, 2^30837972 is an apocalyptic number.

It is an amenable number.

30837972 is an abundant number, since it is smaller than the sum of its proper divisors (47659020).

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

30837972 is a wasteful number, since it uses less digits than its factorization.

30837972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233639 (or 233637 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 30837972 is about 5553.1947561741. The cubic root of 30837972 is about 313.5898061078.

The spelling of 30837972 in words is "thirty million, eight hundred thirty-seven thousand, nine hundred seventy-two".