256279536 has 60 divisors (see below), whose sum is σ = 721589232. Its totient is φ = 84907008.

The previous prime is 256279531. The next prime is 256279589. The reversal of 256279536 is 635972652.

256279536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256279491 and 256279500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256279531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18720 + ... + 29376.

Almost surely, 2^256279536 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 256279536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360794616).

256279536 is an abundant number, since it is smaller than the sum of its proper divisors (465309696).

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

256279536 is a wasteful number, since it uses less digits than its factorization.

256279536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10838 (or 10829 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 256279536 is about 16008.7331166461. The cubic root of 256279536 is about 635.1914490830.

The spelling of 256279536 in words is "two hundred fifty-six million, two hundred seventy-nine thousand, five hundred thirty-six".