257095836 has 24 divisors (see below), whose sum is σ = 666545040. Its totient is φ = 85698576.

The previous prime is 257095831. The next prime is 257095837. The reversal of 257095836 is 638590752.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 257095791 and 257095800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257095831) 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, 1190151 + ... + 1190366.

It is an arithmetic number, because the mean of its divisors is an integer number (27772710).

Almost surely, 2^257095836 is an apocalyptic number.

It is an amenable number.

257095836 is an abundant number, since it is smaller than the sum of its proper divisors (409449204).

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

257095836 is a wasteful number, since it uses less digits than its factorization.

257095836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380530 (or 2380522 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 257095836 is about 16034.2083059938. The cubic root of 257095836 is about 635.8651369438.

The spelling of 257095836 in words is "two hundred fifty-seven million, ninety-five thousand, eight hundred thirty-six".