256045767 has 16 divisors (see below), whose sum is σ = 360720000. Its totient is φ = 161102304.

The previous prime is 256045763. The next prime is 256045813. The reversal of 256045767 is 767540652.

It is not a de Polignac number, because 256045767 - 2² = 256045763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256045763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6984 + ... + 23682.

It is an arithmetic number, because the mean of its divisors is an integer number (22545000).

Almost surely, 2^256045767 is an apocalyptic number.

256045767 is a deficient number, since it is larger than the sum of its proper divisors (104674233).

256045767 is a wasteful number, since it uses less digits than its factorization.

256045767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16990.

The product of its (nonzero) digits is 352800, while the sum is 42.

The square root of 256045767 is about 16001.4301548330. The cubic root of 256045767 is about 634.9982573784.

The spelling of 256045767 in words is "two hundred fifty-six million, forty-five thousand, seven hundred sixty-seven".