256410873 has 32 divisors (see below), whose sum is σ = 393724800. Its totient is φ = 164818368.

The previous prime is 256410863. The next prime is 256410883. The reversal of 256410873 is 378014652.

256410873 is a `hidden beast` number, since 2 + 5 + 641 + 0 + 8 + 7 + 3 = 666.

256410873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (256410863) and next prime (256410883).

It is not a de Polignac number, because 256410873 - 2²¹ = 254313721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256410863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82911 + ... + 85947.

It is an arithmetic number, because the mean of its divisors is an integer number (12303900).

Almost surely, 2^256410873 is an apocalyptic number.

It is an amenable number.

256410873 is a deficient number, since it is larger than the sum of its proper divisors (137313927).

256410873 is a wasteful number, since it uses less digits than its factorization.

256410873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158 (or 3152 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 256410873 is about 16012.8346335057. The cubic root of 256410873 is about 635.2999372515.

The spelling of 256410873 in words is "two hundred fifty-six million, four hundred ten thousand, eight hundred seventy-three".