15890964 has 24 divisors (see below), whose sum is σ = 37410240. Its totient is φ = 5249664.

The previous prime is 15890957. The next prime is 15890977. The reversal of 15890964 is 46909851.

15890964 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4504 + ... + 7215.

It is an arithmetic number, because the mean of its divisors is an integer number (1558760).

Almost surely, 2^15890964 is an apocalyptic number.

It is an amenable number.

15890964 is an abundant number, since it is smaller than the sum of its proper divisors (21519276).

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

15890964 is a wasteful number, since it uses less digits than its factorization.

15890964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839 (or 11837 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 15890964 is about 3986.3472001320. The cubic root of 15890964 is about 251.4105016407.

The spelling of 15890964 in words is "fifteen million, eight hundred ninety thousand, nine hundred sixty-four".