257703490 has 32 divisors (see below), whose sum is σ = 515595456. Its totient is φ = 91940160.

The previous prime is 257703487. The next prime is 257703497. The reversal of 257703490 is 94307752.

It is a super-3 number, since 3×257703490³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (257703497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16272 + ... + 27931.

It is an arithmetic number, because the mean of its divisors is an integer number (16112358).

Almost surely, 2^257703490 is an apocalyptic number.

257703490 is an abundant number, since it is smaller than the sum of its proper divisors (257891966).

257703490 is a wasteful number, since it uses less digits than its factorization.

257703490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44274.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 257703490 is about 16053.1457976311. The cubic root of 257703490 is about 636.3657051201.

The spelling of 257703490 in words is "two hundred fifty-seven million, seven hundred three thousand, four hundred ninety".