256974718 has 72 divisors (see below), whose sum is σ = 531094536. Its totient is φ = 92363040.

The previous prime is 256974691. The next prime is 256974749. The reversal of 256974718 is 817479652.

256974718 is digitally balanced in base 3, 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 (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 153321 + ... + 154987.

It is an arithmetic number, because the mean of its divisors is an integer number (7376313).

Almost surely, 2^256974718 is an apocalyptic number.

256974718 is an abundant number, since it is smaller than the sum of its proper divisors (274119818).

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

256974718 is a wasteful number, since it uses less digits than its factorization.

256974718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1700 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 256974718 is about 16030.4309985727. The cubic root of 256974718 is about 635.7652691125.

The spelling of 256974718 in words is "two hundred fifty-six million, nine hundred seventy-four thousand, seven hundred eighteen".