256376894 has 4 divisors (see below), whose sum is σ = 384565344. Its totient is φ = 128188446.

The previous prime is 256376873. The next prime is 256376903. The reversal of 256376894 is 498673652.

It is a happy number.

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

It is a super-2 number, since 2×256376894² = 131458223554174472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64094222 + ... + 64094225.

It is an arithmetic number, because the mean of its divisors is an integer number (96141336).

Almost surely, 2^256376894 is an apocalyptic number.

256376894 is a deficient number, since it is larger than the sum of its proper divisors (128188450).

256376894 is a wasteful number, since it uses less digits than its factorization.

256376894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128188449.

The product of its digits is 2177280, while the sum is 50.

The square root of 256376894 is about 16011.7736056940. The cubic root of 256376894 is about 635.2718731658.

The spelling of 256376894 in words is "two hundred fifty-six million, three hundred seventy-six thousand, eight hundred ninety-four".