257130776 has 16 divisors (see below), whose sum is σ = 550994640. Its totient is φ = 110198880.

The previous prime is 257130773. The next prime is 257130787. The reversal of 257130776 is 677031752.

It is a super-2 number, since 2×257130776² = 132232471932724352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257130773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295755 + ... + 2295866.

It is an arithmetic number, because the mean of its divisors is an integer number (34437165).

Almost surely, 2^257130776 is an apocalyptic number.

It is an amenable number.

257130776 is an abundant number, since it is smaller than the sum of its proper divisors (293863864).

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

257130776 is a wasteful number, since it uses less digits than its factorization.

257130776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591634 (or 4591630 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 38.

The square root of 257130776 is about 16035.2978145091. The cubic root of 257130776 is about 635.8939408869.

The spelling of 257130776 in words is "two hundred fifty-seven million, one hundred thirty thousand, seven hundred seventy-six".