15799120 has 40 divisors (see below), whose sum is σ = 38897064. Its totient is φ = 5947392.

The previous prime is 15799109. The next prime is 15799123. The reversal of 15799120 is 2199751.

It can be written as a sum of positive squares in 4 ways, for example, as 2286144 + 13512976 = 1512^2 + 3676^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×15799120² = 499224385548800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15799123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4449 + ... + 7168.

Almost surely, 2^15799120 is an apocalyptic number.

15799120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15799120 is an abundant number, since it is smaller than the sum of its proper divisors (23097944).

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

15799120 is a wasteful number, since it uses less digits than its factorization.

15799120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647 (or 11641 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 15799120 is about 3974.8106873158. The cubic root of 15799120 is about 250.9252117092.

The spelling of 15799120 in words is "fifteen million, seven hundred ninety-nine thousand, one hundred twenty".