256416470 has 8 divisors (see below), whose sum is σ = 461549664. Its totient is φ = 102566584.

The previous prime is 256416467. The next prime is 256416481. The reversal of 256416470 is 74614652.

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

It is a self number, because there is not a number n which added to its sum of digits gives 256416470.

It is a congruent 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, 12820814 + ... + 12820833.

It is an arithmetic number, because the mean of its divisors is an integer number (57693708).

Almost surely, 2^256416470 is an apocalyptic number.

256416470 is a deficient number, since it is larger than the sum of its proper divisors (205133194).

256416470 is a wasteful number, since it uses less digits than its factorization.

256416470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25641654.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 256416470 is about 16013.0093986109. The cubic root of 256416470 is about 635.3045597126.

The spelling of 256416470 in words is "two hundred fifty-six million, four hundred sixteen thousand, four hundred seventy".