256606452 has 72 divisors (see below), whose sum is σ = 661848096. Its totient is φ = 83813184.

The previous prime is 256606447. The next prime is 256606481. The reversal of 256606452 is 254606652.

256606452 is a `hidden beast` number, since 2 + 5 + 6 + 6 + 0 + 645 + 2 = 666.

256606452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 468843 + ... + 469389.

Almost surely, 2^256606452 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 256606452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330924048).

256606452 is an abundant number, since it is smaller than the sum of its proper divisors (405241644).

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

256606452 is a wasteful number, since it uses less digits than its factorization.

256606452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 256606452 is about 16018.9404143970. The cubic root of 256606452 is about 635.4614225364.

The spelling of 256606452 in words is "two hundred fifty-six million, six hundred six thousand, four hundred fifty-two".