256410506 has 8 divisors (see below), whose sum is σ = 419580864. Its totient is φ = 116550220.

The previous prime is 256410487. The next prime is 256410527. The reversal of 256410506 is 605014652.

256410506 is digitally balanced in base 3, 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 Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5827490 + ... + 5827533.

It is an arithmetic number, because the mean of its divisors is an integer number (52447608).

Almost surely, 2^256410506 is an apocalyptic number.

256410506 is a deficient number, since it is larger than the sum of its proper divisors (163170358).

256410506 is a wasteful number, since it uses less digits than its factorization.

256410506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655036.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 256410506 is about 16012.8231739441. The cubic root of 256410506 is about 635.2996341505.

The spelling of 256410506 in words is "two hundred fifty-six million, four hundred ten thousand, five hundred six".