257823028 has 12 divisors (see below), whose sum is σ = 451548832. Its totient is φ = 128809080.

The previous prime is 257823023. The next prime is 257823029. The reversal of 257823028 is 820328752.

257823028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257823023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19800 + ... + 30127.

Almost surely, 2^257823028 is an apocalyptic number.

It is an amenable number.

257823028 is a deficient number, since it is larger than the sum of its proper divisors (193725804).

257823028 is a wasteful number, since it uses less digits than its factorization.

257823028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51222 (or 51220 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 257823028 is about 16056.8685614599. The cubic root of 257823028 is about 636.4640844950.

The spelling of 257823028 in words is "two hundred fifty-seven million, eight hundred twenty-three thousand, twenty-eight".