257684412 has 48 divisors (see below), whose sum is σ = 618114560. Its totient is φ = 83521152.

The previous prime is 257684411. The next prime is 257684443. The reversal of 257684412 is 214486752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257684411) 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, 61488 + ... + 65544.

Almost surely, 2^257684412 is an apocalyptic number.

It is an amenable number.

257684412 is an abundant number, since it is smaller than the sum of its proper divisors (360430148).

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

257684412 is a wasteful number, since it uses less digits than its factorization.

257684412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210 (or 4208 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 257684412 is about 16052.5515728809. The cubic root of 257684412 is about 636.3500011748.

The spelling of 257684412 in words is "two hundred fifty-seven million, six hundred eighty-four thousand, four hundred twelve".