15795978 has 16 divisors (see below), whose sum is σ = 34464096. Its totient is φ = 4786640.

The previous prime is 15795943. The next prime is 15796013. The reversal of 15795978 is 87959751.

It is an interprime number because it is at equal distance from previous prime (15795943) and next prime (15796013).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15795978.

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, 119601 + ... + 119732.

It is an arithmetic number, because the mean of its divisors is an integer number (2154006).

Almost surely, 2^15795978 is an apocalyptic number.

15795978 is an abundant number, since it is smaller than the sum of its proper divisors (18668118).

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

15795978 is a wasteful number, since it uses less digits than its factorization.

15795978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239349.

The product of its digits is 793800, while the sum is 51.

The square root of 15795978 is about 3974.4154287140. The cubic root of 15795978 is about 250.9085766205.

It can be divided in two parts, 1579 and 5978, that added together give a palindrome (7557).

The spelling of 15795978 in words is "fifteen million, seven hundred ninety-five thousand, nine hundred seventy-eight".