257034860 has 24 divisors (see below), whose sum is σ = 540419040. Its totient is φ = 102690944.

The previous prime is 257034853. The next prime is 257034881. The reversal of 257034860 is 68430752.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 257034860.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10496 + ... + 24984.

It is an arithmetic number, because the mean of its divisors is an integer number (22517460).

Almost surely, 2^257034860 is an apocalyptic number.

257034860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257034860 is an abundant number, since it is smaller than the sum of its proper divisors (283384180).

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

257034860 is a wasteful number, since it uses less digits than its factorization.

257034860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15385 (or 15383 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 257034860 is about 16032.3067585423. The cubic root of 257034860 is about 635.8148631123.

The spelling of 257034860 in words is "two hundred fifty-seven million, thirty-four thousand, eight hundred sixty".