256127496 has 64 divisors (see below), whose sum is σ = 654523200. Its totient is φ = 83497728.

The previous prime is 256127483. The next prime is 256127497. The reversal of 256127496 is 694721652.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (256127497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391906 + ... + 392558.

It is an arithmetic number, because the mean of its divisors is an integer number (10226925).

Almost surely, 2^256127496 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 256127496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327261600).

256127496 is an abundant number, since it is smaller than the sum of its proper divisors (398395704).

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

256127496 is a wasteful number, since it uses less digits than its factorization.

256127496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 994 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 256127496 is about 16003.9837540532. The cubic root of 256127496 is about 635.0658133370.

The spelling of 256127496 in words is "two hundred fifty-six million, one hundred twenty-seven thousand, four hundred ninety-six".