260400056 has 32 divisors (see below), whose sum is σ = 566336640. Its totient is φ = 109932768.

The previous prime is 260400047. The next prime is 260400059. The reversal of 260400056 is 650004062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260400059) 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, 30950 + ... + 38453.

It is an arithmetic number, because the mean of its divisors is an integer number (17698020).

Almost surely, 2^260400056 is an apocalyptic number.

It is an amenable number.

260400056 is an abundant number, since it is smaller than the sum of its proper divisors (305936584).

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

260400056 is a wasteful number, since it uses less digits than its factorization.

260400056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69483 (or 69479 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 260400056 is about 16136.9159383074. The cubic root of 260400056 is about 638.5776158680.

The spelling of 260400056 in words is "two hundred sixty million, four hundred thousand, fifty-six".