15790720 has 64 divisors (see below), whose sum is σ = 41199840. Its totient is φ = 5739520.

The previous prime is 15790717. The next prime is 15790741. The reversal of 15790720 is 2709751.

It is a tau number, because it is divible by the number of its divisors (64).

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, 5919 + ... + 8161.

Almost surely, 2^15790720 is an apocalyptic number.

15790720 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 15790720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20599920).

15790720 is an abundant number, since it is smaller than the sum of its proper divisors (25409120).

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

15790720 is a wasteful number, since it uses less digits than its factorization.

15790720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273 (or 2261 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 15790720 is about 3973.7538927317. The cubic root of 15790720 is about 250.8807335898.

The spelling of 15790720 in words is "fifteen million, seven hundred ninety thousand, seven hundred twenty".