15432256 has 112 divisors (see below), whose sum is σ = 38608000. Its totient is φ = 6096384.

The previous prime is 15432247. The next prime is 15432257. The reversal of 15432256 is 65223451.

15432256 is nontrivially palindromic in base 3.

15432256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15432257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417070 + ... + 417106.

Almost surely, 2^15432256 is an apocalyptic number.

15432256 is a gapful number since it is divisible by the number (16) 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 15432256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19304000).

15432256 is an abundant number, since it is smaller than the sum of its proper divisors (23175744).

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

15432256 is an equidigital number, since it uses as much as digits as its factorization.

15432256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 65 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 15432256 is about 3928.3910192342. The cubic root of 15432256 is about 248.9677759195.

The spelling of 15432256 in words is "fifteen million, four hundred thirty-two thousand, two hundred fifty-six".