256632012 has 324 divisors, whose sum is σ = 885358656. Its totient is φ = 62052480.

The previous prime is 256632001. The next prime is 256632071. The reversal of 256632012 is 210236652.

256632012 is a `hidden beast` number, since 25 + 6 + 632 + 0 + 1 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 8278437 + ... + 8278467.

Almost surely, 2^256632012 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 256632012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442679328).

256632012 is an abundant number, since it is smaller than the sum of its proper divisors (628726644).

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

256632012 is a wasteful number, since it uses less digits than its factorization.

256632012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 256632012 is about 16019.7382001080. The cubic root of 256632012 is about 635.4825208039.

Adding to 256632012 its reverse (210236652), we get a palindrome (466868664).

The spelling of 256632012 in words is "two hundred fifty-six million, six hundred thirty-two thousand, twelve".