257348696 has 64 divisors (see below), whose sum is σ = 537788160. Its totient is φ = 114480000.

The previous prime is 257348681. The next prime is 257348713. The reversal of 257348696 is 696843752.

It is a happy number.

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, 1421726 + ... + 1421906.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^257348696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257348696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268894080).

257348696 is an abundant number, since it is smaller than the sum of its proper divisors (280439464).

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

257348696 is a wasteful number, since it uses less digits than its factorization.

257348696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 452 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 257348696 is about 16042.0913848538. The cubic root of 257348696 is about 636.0735315745.

The spelling of 257348696 in words is "two hundred fifty-seven million, three hundred forty-eight thousand, six hundred ninety-six".