15921152 has 78 divisors (see below), whose sum is σ = 35974872. Its totient is φ = 7028736.

The previous prime is 15921151. The next prime is 15921167. The reversal of 15921152 is 25112951.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15921151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 692213 + ... + 692235.

Almost surely, 2^15921152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15921152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17987436).

15921152 is an abundant number, since it is smaller than the sum of its proper divisors (20053720).

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

15921152 is an equidigital number, since it uses as much as digits as its factorization.

15921152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 38 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 15921152 is about 3990.1318273962. The cubic root of 15921152 is about 251.5696021065.

It can be divided in two parts, 1592 and 1152, that added together give a cube (2744 = 14³).

The spelling of 15921152 in words is "fifteen million, nine hundred twenty-one thousand, one hundred fifty-two".