15231264 has 48 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 4901120.

The previous prime is 15231259. The next prime is 15231277. The reversal of 15231264 is 46213251.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 49 + ... + 5519.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^15231264 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 15231264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20684160).

15231264 is an abundant number, since it is smaller than the sum of its proper divisors (26137056).

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

15231264 is a wasteful number, since it uses less digits than its factorization.

15231264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513 (or 5505 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 15231264 is about 3902.7252017020. The cubic root of 15231264 is about 247.8821847609.

The spelling of 15231264 in words is "fifteen million, two hundred thirty-one thousand, two hundred sixty-four".