256136296 has 32 divisors (see below), whose sum is σ = 521002440. Its totient is φ = 117347328.

The previous prime is 256136261. The next prime is 256136327. The reversal of 256136296 is 692631652.

It can be written as a sum of positive squares in 4 ways, for example, as 188073796 + 68062500 = 13714^2 + 8250^2 .

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, 5260 + ... + 23236.

Almost surely, 2^256136296 is an apocalyptic number.

256136296 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256136296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260501220).

256136296 is an abundant number, since it is smaller than the sum of its proper divisors (264866144).

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

256136296 is a wasteful number, since it uses less digits than its factorization.

256136296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18133 (or 18129 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 256136296 is about 16004.2586832380. The cubic root of 256136296 is about 635.0730864272.

The spelling of 256136296 in words is "two hundred fifty-six million, one hundred thirty-six thousand, two hundred ninety-six".