256392192 has 88 divisors (see below), whose sum is σ = 781069696. Its totient is φ = 73248768.

The previous prime is 256392139. The next prime is 256392221. The reversal of 256392192 is 291293652.

It is a super-2 number, since 2×256392192² = 131473912237129728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256392192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15543 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (8875792).

Almost surely, 2^256392192 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 256392192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390534848).

256392192 is an abundant number, since it is smaller than the sum of its proper divisors (524677504).

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

256392192 is a wasteful number, since it uses less digits than its factorization.

256392192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11953 (or 11935 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 256392192 is about 16012.2513095442. The cubic root of 256392192 is about 635.2845084644.

The spelling of 256392192 in words is "two hundred fifty-six million, three hundred ninety-two thousand, one hundred ninety-two".