15891960 has 64 divisors (see below), whose sum is σ = 54489600. Its totient is φ = 3632256.

The previous prime is 15891959. The next prime is 15891977. The reversal of 15891960 is 6919851.

It is a congruent number.

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, 8620 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (851400).

Almost surely, 2^15891960 is an apocalyptic number.

15891960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15891960 is an abundant number, since it is smaller than the sum of its proper divisors (38597640).

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

15891960 is a wasteful number, since it uses less digits than its factorization.

15891960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18940 (or 18936 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 15891960 is about 3986.4721245733. The cubic root of 15891960 is about 251.4157540938.

The spelling of 15891960 in words is "fifteen million, eight hundred ninety-one thousand, nine hundred sixty".