256969432 has 32 divisors (see below), whose sum is σ = 503618400. Its totient is φ = 122690304.

The previous prime is 256969429. The next prime is 256969441. The reversal of 256969432 is 234969652.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207118 + ... + 208354.

It is an arithmetic number, because the mean of its divisors is an integer number (15738075).

Almost surely, 2^256969432 is an apocalyptic number.

It is an amenable number.

256969432 is a deficient number, since it is larger than the sum of its proper divisors (246648968).

256969432 is a wasteful number, since it uses less digits than its factorization.

256969432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395 (or 2391 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 256969432 is about 16030.2661238047. The cubic root of 256969432 is about 635.7609098273.

The spelling of 256969432 in words is "two hundred fifty-six million, nine hundred sixty-nine thousand, four hundred thirty-two".