256532472 has 96 divisors (see below), whose sum is σ = 807580800. Its totient is φ = 72044352.

The previous prime is 256532461. The next prime is 256532483. The reversal of 256532472 is 274235652.

256532472 is a `hidden beast` number, since 2 + 56 + 532 + 4 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (256532461) and next prime (256532483).

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 23 ways as a sum of consecutive naturals, for example, 25423 + ... + 34049.

It is an arithmetic number, because the mean of its divisors is an integer number (8412300).

Almost surely, 2^256532472 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 256532472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403790400).

256532472 is an abundant number, since it is smaller than the sum of its proper divisors (551048328).

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

256532472 is a wasteful number, since it uses less digits than its factorization.

256532472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705 (or 8698 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 256532472 is about 16016.6311064468. The cubic root of 256532472 is about 635.4003485270.

The spelling of 256532472 in words is "two hundred fifty-six million, five hundred thirty-two thousand, four hundred seventy-two".