256896472 has 16 divisors (see below), whose sum is σ = 550492560. Its totient is φ = 110098464.

The previous prime is 256896461. The next prime is 256896481. The reversal of 256896472 is 274698652.

256896472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2293663 + ... + 2293774.

It is an arithmetic number, because the mean of its divisors is an integer number (34405785).

Almost surely, 2^256896472 is an apocalyptic number.

It is an amenable number.

256896472 is an abundant number, since it is smaller than the sum of its proper divisors (293596088).

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

256896472 is a wasteful number, since it uses less digits than its factorization.

256896472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587450 (or 4587446 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 256896472 is about 16027.9902670297. The cubic root of 256896472 is about 635.7007346977.

The spelling of 256896472 in words is "two hundred fifty-six million, eight hundred ninety-six thousand, four hundred seventy-two".