256011392 has 128 divisors (see below), whose sum is σ = 648883200. Its totient is φ = 97873920.

The previous prime is 256011383. The next prime is 256011401. The reversal of 256011392 is 293110652.

It is an interprime number because it is at equal distance from previous prime (256011383) and next prime (256011401).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360734 + ... + 361442.

It is an arithmetic number, because the mean of its divisors is an integer number (5069400).

Almost surely, 2^256011392 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 256011392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324441600).

256011392 is an abundant number, since it is smaller than the sum of its proper divisors (392871808).

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

256011392 is a wasteful number, since it uses less digits than its factorization.

256011392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 256011392 is about 16000.3559960396. The cubic root of 256011392 is about 634.9698392271.

The spelling of 256011392 in words is "two hundred fifty-six million, eleven thousand, three hundred ninety-two".