256476672 has 80 divisors (see below), whose sum is σ = 759229680. Its totient is φ = 85487616.

The previous prime is 256476659. The next prime is 256476679. The reversal of 256476672 is 276674652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256476679) 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, 4548 + ... + 23100.

It is an arithmetic number, because the mean of its divisors is an integer number (9490371).

Almost surely, 2^256476672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256476672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379614840).

256476672 is an abundant number, since it is smaller than the sum of its proper divisors (502753008).

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

256476672 is an equidigital number, since it uses as much as digits as its factorization.

256476672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580 (or 18558 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 256476672 is about 16014.8890723601. The cubic root of 256476672 is about 635.3542752039.

The spelling of 256476672 in words is "two hundred fifty-six million, four hundred seventy-six thousand, six hundred seventy-two".