15797880 has 96 divisors (see below), whose sum is σ = 58687200. Its totient is φ = 3610368.

The previous prime is 15797851. The next prime is 15797891. The reversal of 15797880 is 8879751.

15797880 is a `hidden beast` number, since 1 + 579 + 78 + 8 + 0 = 666.

15797880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (611325).

Almost surely, 2^15797880 is an apocalyptic number.

15797880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15797880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29343600).

15797880 is an abundant number, since it is smaller than the sum of its proper divisors (42889320).

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

15797880 is a wasteful number, since it uses less digits than its factorization.

15797880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293 (or 6286 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 15797880 is about 3974.6547019836. The cubic root of 15797880 is about 250.9186468836.

The spelling of 15797880 in words is "fifteen million, seven hundred ninety-seven thousand, eight hundred eighty".