256612464 has 60 divisors (see below), whose sum is σ = 737583496. Its totient is φ = 83223936.

The previous prime is 256612439. The next prime is 256612483. The reversal of 256612464 is 464216652.

256612464 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 11 ways as a sum of consecutive naturals, for example, 18754 + ... + 29409.

Almost surely, 2^256612464 is an apocalyptic number.

256612464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256612464 is an abundant number, since it is smaller than the sum of its proper divisors (480971032).

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

256612464 is a wasteful number, since it uses less digits than its factorization.

256612464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48214 (or 48205 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 256612464 is about 16019.1280661589. The cubic root of 256612464 is about 635.4663852127.

The spelling of 256612464 in words is "two hundred fifty-six million, six hundred twelve thousand, four hundred sixty-four".