257803480 has 32 divisors (see below), whose sum is σ = 632791440. Its totient is φ = 93746560.

The previous prime is 257803477. The next prime is 257803489. The reversal of 257803480 is 84308752.

It is a super-2 number, since 2×257803480² = 132925268600220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257803489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292519 + ... + 293398.

Almost surely, 2^257803480 is an apocalyptic number.

257803480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257803480 is an abundant number, since it is smaller than the sum of its proper divisors (374987960).

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

257803480 is a wasteful number, since it uses less digits than its factorization.

257803480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585939 (or 585935 counting only the distinct ones).

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

The square root of 257803480 is about 16056.2598384555. The cubic root of 257803480 is about 636.4479986363.

The spelling of 257803480 in words is "two hundred fifty-seven million, eight hundred three thousand, four hundred eighty".