256254436 has 12 divisors (see below), whose sum is σ = 450572080. Its totient is φ = 127519560.

The previous prime is 256254409. The next prime is 256254437. The reversal of 256254436 is 634452652.

It is a junction number, because it is equal to n+sod(n) for n = 256254395 and 256254404.

It is not an unprimeable number, because it can be changed into a prime (256254437) 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 3 ways as a sum of consecutive naturals, for example, 150966 + ... + 152653.

Almost surely, 2^256254436 is an apocalyptic number.

It is an amenable number.

256254436 is a deficient number, since it is larger than the sum of its proper divisors (194317644).

256254436 is a wasteful number, since it uses less digits than its factorization.

256254436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303834 (or 303832 counting only the distinct ones).

The product of its digits is 172800, while the sum is 37.

The square root of 256254436 is about 16007.9491503440. The cubic root of 256254436 is about 635.1707115371.

The spelling of 256254436 in words is "two hundred fifty-six million, two hundred fifty-four thousand, four hundred thirty-six".