256651192 has 16 divisors (see below), whose sum is σ = 549966960. Its totient is φ = 109993344.

The previous prime is 256651151. The next prime is 256651211. The reversal of 256651192 is 291156652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291473 + ... + 2291584.

It is an arithmetic number, because the mean of its divisors is an integer number (34372935).

Almost surely, 2^256651192 is an apocalyptic number.

It is an amenable number.

256651192 is an abundant number, since it is smaller than the sum of its proper divisors (293315768).

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

256651192 is a wasteful number, since it uses less digits than its factorization.

256651192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583070 (or 4583066 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 256651192 is about 16020.3368254229. The cubic root of 256651192 is about 635.4983518390.

The spelling of 256651192 in words is "two hundred fifty-six million, six hundred fifty-one thousand, one hundred ninety-two".