257094634 has 4 divisors (see below), whose sum is σ = 385641954. Its totient is φ = 128547316.

The previous prime is 257094631. The next prime is 257094637. The reversal of 257094634 is 436490752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (257094631) and next prime (257094637).

It can be written as a sum of positive squares in only one way, i.e., 173317225 + 83777409 = 13165^2 + 9153^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (257094631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64273657 + ... + 64273660.

Almost surely, 2^257094634 is an apocalyptic number.

257094634 is a deficient number, since it is larger than the sum of its proper divisors (128547320).

257094634 is a wasteful number, since it uses less digits than its factorization.

257094634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128547319.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 257094634 is about 16034.1708235880. The cubic root of 257094634 is about 635.8641459890.

The spelling of 257094634 in words is "two hundred fifty-seven million, ninety-four thousand, six hundred thirty-four".