257247696 has 20 divisors (see below), whose sum is σ = 664556672. Its totient is φ = 85749216.

The previous prime is 257247673. The next prime is 257247701. The reversal of 257247696 is 696742752.

257247696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 5359327 = 257247696 / (2 + 5 + 7 + 2 + 4 + 7 + 6 + 9 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2679616 + ... + 2679711.

Almost surely, 2^257247696 is an apocalyptic number.

It is an amenable number.

257247696 is an abundant number, since it is smaller than the sum of its proper divisors (407308976).

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

257247696 is a wasteful number, since it uses less digits than its factorization.

257247696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359338 (or 5359332 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 257247696 is about 16038.9431073247. The cubic root of 257247696 is about 635.9903087800.

The spelling of 257247696 in words is "two hundred fifty-seven million, two hundred forty-seven thousand, six hundred ninety-six".