256260744 has 48 divisors (see below), whose sum is σ = 700428300. Its totient is φ = 84633984.

The previous prime is 256260743. The next prime is 256260749. The reversal of 256260744 is 447062652.

256260744 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 607 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 255680100 + 580644 = 15990^2 + 762^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 256260699 and 256260708.

It is not an unprimeable number, because it can be changed into a prime (256260743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8479 + ... + 24174.

Almost surely, 2^256260744 is an apocalyptic number.

256260744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256260744 is an abundant number, since it is smaller than the sum of its proper divisors (444167556).

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

256260744 is a wasteful number, since it uses less digits than its factorization.

256260744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32774 (or 32767 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 256260744 is about 16008.1461762441. The cubic root of 256260744 is about 635.1759233155.

The spelling of 256260744 in words is "two hundred fifty-six million, two hundred sixty thousand, seven hundred forty-four".