260628057 has 16 divisors (see below), whose sum is σ = 391881280. Its totient is φ = 171157536.

The previous prime is 260628013. The next prime is 260628077. The reversal of 260628057 is 750826062.

260628057 is a `hidden beast` number, since 26 + 0 + 628 + 0 + 5 + 7 = 666.

It is not a de Polignac number, because 260628057 - 2¹⁰ = 260627033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260628077) 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, 70228 + ... + 73845.

It is an arithmetic number, because the mean of its divisors is an integer number (24492580).

Almost surely, 2^260628057 is an apocalyptic number.

260628057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

260628057 is a deficient number, since it is larger than the sum of its proper divisors (131253223).

260628057 is a wasteful number, since it uses less digits than its factorization.

260628057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144149 (or 144143 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 260628057 is about 16143.9789705017. The cubic root of 260628057 is about 638.7639366957.

The spelling of 260628057 in words is "two hundred sixty million, six hundred twenty-eight thousand, fifty-seven".