31889064 has 16 divisors (see below), whose sum is σ = 79722720. Its totient is φ = 10629680.

The previous prime is 31889057. The next prime is 31889083. The reversal of 31889064 is 46098813.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 664332 + ... + 664379.

It is an arithmetic number, because the mean of its divisors is an integer number (4982670).

Almost surely, 2^31889064 is an apocalyptic number.

It is an amenable number.

31889064 is an abundant number, since it is smaller than the sum of its proper divisors (47833656).

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

31889064 is a wasteful number, since it uses less digits than its factorization.

31889064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328720 (or 1328716 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 31889064 is about 5647.0402867343. The cubic root of 31889064 is about 317.1129107810.

The spelling of 31889064 in words is "thirty-one million, eight hundred eighty-nine thousand, sixty-four".