257402092 has 6 divisors (see below), whose sum is σ = 450453668. Its totient is φ = 128701044.

The previous prime is 257402071. The next prime is 257402099. The reversal of 257402092 is 290204752.

It is not an unprimeable number, because it can be changed into a prime (257402099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32175258 + ... + 32175265.

Almost surely, 2^257402092 is an apocalyptic number.

It is an amenable number.

257402092 is a deficient number, since it is larger than the sum of its proper divisors (193051576).

257402092 is a wasteful number, since it uses less digits than its factorization.

257402092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64350527 (or 64350525 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 257402092 is about 16043.7555453828. The cubic root of 257402092 is about 636.1175204426.

The spelling of 257402092 in words is "two hundred fifty-seven million, four hundred two thousand, ninety-two".