257238448 has 20 divisors (see below), whose sum is σ = 500583040. Its totient is φ = 128055744.

The previous prime is 257238437. The next prime is 257238451. The reversal of 257238448 is 844832752.

257238448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 31440 + ... + 38767.

It is an arithmetic number, because the mean of its divisors is an integer number (25029152).

Almost surely, 2^257238448 is an apocalyptic number.

It is an amenable number.

257238448 is a deficient number, since it is larger than the sum of its proper divisors (243344592).

257238448 is a wasteful number, since it uses less digits than its factorization.

257238448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70444 (or 70438 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 257238448 is about 16038.6548064356. The cubic root of 257238448 is about 635.9826874498.

The spelling of 257238448 in words is "two hundred fifty-seven million, two hundred thirty-eight thousand, four hundred forty-eight".