1272854564 has 48 divisors (see below), whose sum is σ = 2316023808. Its totient is φ = 611739648.

The previous prime is 1272854563. The next prime is 1272854633. The reversal of 1272854564 is 4654582721.

It is not an unprimeable number, because it can be changed into a prime (1272854563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4066472 + ... + 4066784.

It is an arithmetic number, because the mean of its divisors is an integer number (48250496).

Almost surely, 2^1272854564 is an apocalyptic number.

It is an amenable number.

1272854564 is a deficient number, since it is larger than the sum of its proper divisors (1043169244).

1272854564 is a wasteful number, since it uses less digits than its factorization.

1272854564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 682 counting only the distinct ones).

The product of its digits is 537600, while the sum is 44.

The square root of 1272854564 is about 35677.0873811190. The cubic root of 1272854564 is about 1083.7428902799.

The spelling of 1272854564 in words is "one billion, two hundred seventy-two million, eight hundred fifty-four thousand, five hundred sixty-four".