15990560 has 48 divisors (see below), whose sum is σ = 38102400. Its totient is φ = 6341376.

The previous prime is 15990553. The next prime is 15990613. The reversal of 15990560 is 6509951.

It is a super-2 number, since 2×15990560² = 511396018227200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15990560.

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, 21881 + ... + 22599.

It is an arithmetic number, because the mean of its divisors is an integer number (793800).

Almost surely, 2^15990560 is an apocalyptic number.

15990560 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 15990560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19051200).

15990560 is an abundant number, since it is smaller than the sum of its proper divisors (22111840).

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

15990560 is a wasteful number, since it uses less digits than its factorization.

15990560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 15990560 is about 3998.8198258986. The cubic root of 15990560 is about 251.9346433350.

The spelling of 15990560 in words is "fifteen million, nine hundred ninety thousand, five hundred sixty".