30957072 has 40 divisors (see below), whose sum is σ = 80203200. Its totient is φ = 10289280.

The previous prime is 30957071. The next prime is 30957077. The reversal of 30957072 is 27075903.

It is not an unprimeable number, because it can be changed into a prime (30957071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21429 + ... + 22827.

It is an arithmetic number, because the mean of its divisors is an integer number (2005080).

Almost surely, 2^30957072 is an apocalyptic number.

It is an amenable number.

30957072 is an abundant number, since it is smaller than the sum of its proper divisors (49246128).

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

30957072 is a wasteful number, since it uses less digits than its factorization.

30957072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 30957072 is about 5563.9079791096. The cubic root of 30957072 is about 313.9929948266.

The spelling of 30957072 in words is "thirty million, nine hundred fifty-seven thousand, seventy-two".