256842576 has 100 divisors (see below), whose sum is σ = 756201600. Its totient is φ = 84138048.

The previous prime is 256842563. The next prime is 256842577. The reversal of 256842576 is 675248652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256842577) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74785 + ... + 78143.

It is an arithmetic number, because the mean of its divisors is an integer number (7562016).

Almost surely, 2^256842576 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 256842576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378100800).

256842576 is an abundant number, since it is smaller than the sum of its proper divisors (499359024).

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

256842576 is a wasteful number, since it uses less digits than its factorization.

256842576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438 (or 3423 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 256842576 is about 16026.3088701048. The cubic root of 256842576 is about 635.6562756428.

The spelling of 256842576 in words is "two hundred fifty-six million, eight hundred forty-two thousand, five hundred seventy-six".