256444652 has 6 divisors (see below), whose sum is σ = 448778148. Its totient is φ = 128222324.

The previous prime is 256444633. The next prime is 256444667.

256444652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256444652² = 131527719078802208, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32055578 + ... + 32055585.

It is an arithmetic number, because the mean of its divisors is an integer number (74796358).

Almost surely, 2^256444652 is an apocalyptic number.

It is an amenable number.

256444652 is a deficient number, since it is larger than the sum of its proper divisors (192333496).

256444652 is a wasteful number, since it uses less digits than its factorization.

256444652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64111167 (or 64111165 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 256444652 is about 16013.8893464392. The cubic root of 256444652 is about 635.3278336950.

The spelling of 256444652 in words is "two hundred fifty-six million, four hundred forty-four thousand, six hundred fifty-two".