1268636572 has 12 divisors (see below), whose sum is σ = 2537273200. Its totient is φ = 543701376.

The previous prime is 1268636557. The next prime is 1268636627. The reversal of 1268636572 is 2756368621.

1268636572 is an admirable number.

It is a super-2 number, since 2×1268636572² = 3218877503631822368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22654197 + ... + 22654252.

Almost surely, 2^1268636572 is an apocalyptic number.

It is an amenable number.

1268636572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1268636572 is a wasteful number, since it uses less digits than its factorization.

1268636572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45308460 (or 45308458 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 1268636572 is about 35617.9248693688. The cubic root of 1268636572 is about 1082.5444612623.

The spelling of 1268636572 in words is "one billion, two hundred sixty-eight million, six hundred thirty-six thousand, five hundred seventy-two".