257469880 has 64 divisors (see below), whose sum is σ = 604972800. Its totient is φ = 98503680.

The previous prime is 257469871. The next prime is 257469977. The reversal of 257469880 is 88964752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109194 + ... + 111526.

It is an arithmetic number, because the mean of its divisors is an integer number (9452700).

Almost surely, 2^257469880 is an apocalyptic number.

257469880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257469880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302486400).

257469880 is an abundant number, since it is smaller than the sum of its proper divisors (347502920).

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

257469880 is a wasteful number, since it uses less digits than its factorization.

257469880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 257469880 is about 16045.8680039442. The cubic root of 257469880 is about 636.1733570125.

The spelling of 257469880 in words is "two hundred fifty-seven million, four hundred sixty-nine thousand, eight hundred eighty".