256624448284 has 12 divisors (see below), whose sum is σ = 468618557904. Its totient is φ = 122733431744.

The previous prime is 256624448257. The next prime is 256624448287. The reversal of 256624448284 is 482844426652.

It is a happy number.

It is a super-2 number, since 2×256624448284² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256624448287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394697997 + ... + 1394698180.

It is an arithmetic number, because the mean of its divisors is an integer number (39051546492).

Almost surely, 2^256624448284 is an apocalyptic number.

It is an amenable number.

256624448284 is a deficient number, since it is larger than the sum of its proper divisors (211994109620).

256624448284 is a wasteful number, since it uses less digits than its factorization.

256624448284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789396204 (or 2789396202 counting only the distinct ones).

The product of its digits is 23592960, while the sum is 55.

The spelling of 256624448284 in words is "two hundred fifty-six billion, six hundred twenty-four million, four hundred forty-eight thousand, two hundred eighty-four".