256775470 has 16 divisors (see below), whose sum is σ = 528223968. Its totient is φ = 88037280.

The previous prime is 256775461. The next prime is 256775501. The reversal of 256775470 is 74577652.

It is a congruent number.

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, 1834041 + ... + 1834180.

It is an arithmetic number, because the mean of its divisors is an integer number (33013998).

Almost surely, 2^256775470 is an apocalyptic number.

256775470 is an abundant number, since it is smaller than the sum of its proper divisors (271448498).

256775470 is a wasteful number, since it uses less digits than its factorization.

256775470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668235.

The product of its (nonzero) digits is 411600, while the sum is 43.

The square root of 256775470 is about 16024.2151133839. The cubic root of 256775470 is about 635.6009109051.

The spelling of 256775470 in words is "two hundred fifty-six million, seven hundred seventy-five thousand, four hundred seventy".