257853280 has 96 divisors (see below), whose sum is σ = 659062656. Its totient is φ = 94961664.

The previous prime is 257853269. The next prime is 257853293. The reversal of 257853280 is 82358752.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 126832 + ... + 128848.

It is an arithmetic number, because the mean of its divisors is an integer number (6865236).

Almost surely, 2^257853280 is an apocalyptic number.

257853280 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 257853280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329531328).

257853280 is an abundant number, since it is smaller than the sum of its proper divisors (401209376).

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

257853280 is a wasteful number, since it uses less digits than its factorization.

257853280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 257853280 is about 16057.8105605964. The cubic root of 257853280 is about 636.4889769682.

The spelling of 257853280 in words is "two hundred fifty-seven million, eight hundred fifty-three thousand, two hundred eighty".