256261212 has 24 divisors (see below), whose sum is σ = 664381200. Its totient is φ = 85420368.

The previous prime is 256261199. The next prime is 256261217. The reversal of 256261212 is 212162652.

256261212 is a `hidden beast` number, since 25 + 626 + 1 + 2 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256261217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186287 + ... + 1186502.

It is an arithmetic number, because the mean of its divisors is an integer number (27682550).

Almost surely, 2^256261212 is an apocalyptic number.

It is an amenable number.

256261212 is an abundant number, since it is smaller than the sum of its proper divisors (408119988).

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

256261212 is a wasteful number, since it uses less digits than its factorization.

256261212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372802 (or 2372794 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 256261212 is about 16008.1607937951. The cubic root of 256261212 is about 635.1763099818.

The spelling of 256261212 in words is "two hundred fifty-six million, two hundred sixty-one thousand, two hundred twelve".