257273260 has 24 divisors (see below), whose sum is σ = 545627376. Its totient is φ = 101889600.

The previous prime is 257273249. The next prime is 257273311. The reversal of 257273260 is 62372752.

It is a super-2 number, since 2×257273260² = 132379060622055200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61662 + ... + 65701.

It is an arithmetic number, because the mean of its divisors is an integer number (22734474).

Almost surely, 2^257273260 is an apocalyptic number.

257273260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257273260 is an abundant number, since it is smaller than the sum of its proper divisors (288354116).

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

257273260 is a wasteful number, since it uses less digits than its factorization.

257273260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127473 (or 127471 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 257273260 is about 16039.7400228308. The cubic root of 257273260 is about 636.0113752696.

The spelling of 257273260 in words is "two hundred fifty-seven million, two hundred seventy-three thousand, two hundred sixty".