15997896 has 24 divisors (see below), whose sum is σ = 43327830. Its totient is φ = 5332608.

The previous prime is 15997889. The next prime is 15997957. The reversal of 15997896 is 69879951.

15997896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 14333796 + 1664100 = 3786^2 + 1290^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111025 + ... + 111168.

Almost surely, 2^15997896 is an apocalyptic number.

It is an amenable number.

15997896 is an abundant number, since it is smaller than the sum of its proper divisors (27329934).

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

15997896 is a wasteful number, since it uses less digits than its factorization.

15997896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222205 (or 222198 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 15997896 is about 3999.7369913533. The cubic root of 15997896 is about 251.9731641869.

The spelling of 15997896 in words is "fifteen million, nine hundred ninety-seven thousand, eight hundred ninety-six".