256723715 has 8 divisors (see below), whose sum is σ = 326190240. Its totient is φ = 193297792.

The previous prime is 256723697. The next prime is 256723739. The reversal of 256723715 is 517327652.

256723715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 256723715 - 2¹⁰ = 256722691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1510055 + ... + 1510224.

It is an arithmetic number, because the mean of its divisors is an integer number (40773780).

Almost surely, 2^256723715 is an apocalyptic number.

256723715 is a deficient number, since it is larger than the sum of its proper divisors (69466525).

256723715 is a wasteful number, since it uses less digits than its factorization.

256723715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020301.

The product of its digits is 88200, while the sum is 38.

The square root of 256723715 is about 16022.6001323131. The cubic root of 256723715 is about 635.5582046768.

The spelling of 256723715 in words is "two hundred fifty-six million, seven hundred twenty-three thousand, seven hundred fifteen".