15795990 has 48 divisors (see below), whose sum is σ = 46938528. Its totient is φ = 3610368.

The previous prime is 15795943. The next prime is 15796013. The reversal of 15795990 is 9959751.

15795990 is a `hidden beast` number, since 1 + 57 + 9 + 599 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11907 + ... + 13166.

It is an arithmetic number, because the mean of its divisors is an integer number (977886).

Almost surely, 2^15795990 is an apocalyptic number.

15795990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15795990 is an abundant number, since it is smaller than the sum of its proper divisors (31142538).

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

15795990 is a wasteful number, since it uses less digits than its factorization.

15795990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25093 (or 25090 counting only the distinct ones).

The product of its (nonzero) digits is 127575, while the sum is 45.

The square root of 15795990 is about 3974.4169383697. The cubic root of 15795990 is about 250.9086401579.

It can be divided in two parts, 1579 and 5990, that added together give a square (7569 = 87²).

The spelling of 15795990 in words is "fifteen million, seven hundred ninety-five thousand, nine hundred ninety".