261076256 has 48 divisors (see below), whose sum is σ = 588518784. Its totient is φ = 111681024.

The previous prime is 261076253. The next prime is 261076261. The reversal of 261076256 is 652670162.

It is a super-2 number, since 2×261076256² = 136321622893955072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261076253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212861 + ... + 214083.

It is an arithmetic number, because the mean of its divisors is an integer number (12260808).

Almost surely, 2^261076256 is an apocalyptic number.

It is an amenable number.

261076256 is an abundant number, since it is smaller than the sum of its proper divisors (327442528).

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

261076256 is a wasteful number, since it uses less digits than its factorization.

261076256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2185 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 261076256 is about 16157.8543129959. The cubic root of 261076256 is about 639.1298852763.

The spelling of 261076256 in words is "two hundred sixty-one million, seventy-six thousand, two hundred fifty-six".