256958378 has 8 divisors (see below), whose sum is σ = 385512672. Its totient is φ = 128454156.

The previous prime is 256958327. The next prime is 256958389. The reversal of 256958378 is 873859652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5501 + ... + 23327.

It is an arithmetic number, because the mean of its divisors is an integer number (48189084).

Almost surely, 2^256958378 is an apocalyptic number.

256958378 is a deficient number, since it is larger than the sum of its proper divisors (128554294).

256958378 is a wasteful number, since it uses less digits than its factorization.

256958378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25036.

The product of its digits is 3628800, while the sum is 53.

The square root of 256958378 is about 16029.9213348039. The cubic root of 256958378 is about 635.7517935655.

The spelling of 256958378 in words is "two hundred fifty-six million, nine hundred fifty-eight thousand, three hundred seventy-eight".