256946958 has 16 divisors (see below), whose sum is σ = 570993360. Its totient is φ = 85648968.

The previous prime is 256946953. The next prime is 256946969. The reversal of 256946958 is 859649652.

It is a happy number.

256946958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 4758277 = 256946958 / (2 + 5 + 6 + 9 + 4 + 6 + 9 + 5 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256946953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2379085 + ... + 2379192.

It is an arithmetic number, because the mean of its divisors is an integer number (35687085).

Almost surely, 2^256946958 is an apocalyptic number.

256946958 is an abundant number, since it is smaller than the sum of its proper divisors (314046402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256946958 is a wasteful number, since it uses less digits than its factorization.

256946958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4758288 (or 4758282 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 256946958 is about 16029.5651219863. The cubic root of 256946958 is about 635.7423751880.

The spelling of 256946958 in words is "two hundred fifty-six million, nine hundred forty-six thousand, nine hundred fifty-eight".