257383086 has 32 divisors (see below), whose sum is σ = 519861888. Its totient is φ = 84949920.

The previous prime is 257383081. The next prime is 257383097. The reversal of 257383086 is 680383752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257383081) 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, 376501 + ... + 377183.

It is an arithmetic number, because the mean of its divisors is an integer number (16245684).

Almost surely, 2^257383086 is an apocalyptic number.

257383086 is an abundant number, since it is smaller than the sum of its proper divisors (262478802).

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

257383086 is a wasteful number, since it uses less digits than its factorization.

257383086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 257383086 is about 16043.1632167724. The cubic root of 257383086 is about 636.1018635546.

The spelling of 257383086 in words is "two hundred fifty-seven million, three hundred eighty-three thousand, eighty-six".