15988272 has 80 divisors (see below), whose sum is σ = 44520960. Its totient is φ = 4928256.

The previous prime is 15988249. The next prime is 15988307. The reversal of 15988272 is 27288951.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42678 + ... + 43050.

It is an arithmetic number, because the mean of its divisors is an integer number (556512).

Almost surely, 2^15988272 is an apocalyptic number.

15988272 is a gapful number since it is divisible by the number (12) 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 15988272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22260480).

15988272 is an abundant number, since it is smaller than the sum of its proper divisors (28532688).

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

15988272 is a wasteful number, since it uses less digits than its factorization.

15988272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 444 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 15988272 is about 3998.5337312570. The cubic root of 15988272 is about 251.9226267877.

It can be divided in two parts, 1598 and 8272, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 15988272 in words is "fifteen million, nine hundred eighty-eight thousand, two hundred seventy-two".