15947855 has 32 divisors (see below), whose sum is σ = 24910848. Its totient is φ = 9504000.

The previous prime is 15947843. The next prime is 15947909. The reversal of 15947855 is 55874951.

It is not a de Polignac number, because 15947855 - 2⁶ = 15947791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7955 + ... + 9755.

It is an arithmetic number, because the mean of its divisors is an integer number (778464).

Almost surely, 2^15947855 is an apocalyptic number.

15947855 is a deficient number, since it is larger than the sum of its proper divisors (8962993).

15947855 is a wasteful number, since it uses less digits than its factorization.

15947855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847.

The product of its digits is 252000, while the sum is 44.

The square root of 15947855 is about 3993.4765555841. The cubic root of 15947855 is about 251.7101679599.

It can be divided in two parts, 1594 and 7855, that added together give a palindrome (9449).

The spelling of 15947855 in words is "fifteen million, nine hundred forty-seven thousand, eight hundred fifty-five".