15390972 has 60 divisors (see below), whose sum is σ = 40893160. Its totient is φ = 5046624.

The previous prime is 15390961. The next prime is 15390989. The reversal of 15390972 is 27909351.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21354 + ... + 22062.

Almost surely, 2^15390972 is an apocalyptic number.

15390972 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 15390972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20446580).

15390972 is an abundant number, since it is smaller than the sum of its proper divisors (25502188).

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

15390972 is a wasteful number, since it uses less digits than its factorization.

15390972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 15390972 is about 3923.1329317269. The cubic root of 15390972 is about 248.7455667838.

It can be divided in two parts, 153 and 90972, that added together give a cube (91125 = 45³).

The spelling of 15390972 in words is "fifteen million, three hundred ninety thousand, nine hundred seventy-two".