260400057 has 8 divisors (see below), whose sum is σ = 348945600. Its totient is φ = 172727280.

The previous prime is 260400047. The next prime is 260400059. The reversal of 260400057 is 750004062.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 260400057 - 2¹¹ = 260398009 is a prime.

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, 217494 + ... + 218687.

It is an arithmetic number, because the mean of its divisors is an integer number (43618200).

Almost surely, 2^260400057 is an apocalyptic number.

It is an amenable number.

260400057 is a deficient number, since it is larger than the sum of its proper divisors (88545543).

260400057 is a wasteful number, since it uses less digits than its factorization.

260400057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436383.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 260400057 is about 16136.9159692923. The cubic root of 260400057 is about 638.5776166855.

The spelling of 260400057 in words is "two hundred sixty million, four hundred thousand, fifty-seven".