1272913444 has 24 divisors (see below), whose sum is σ = 2508500736. Its totient is φ = 559932000.

The previous prime is 1272913441. The next prime is 1272913463. The reversal of 1272913444 is 4443192721.

It is a super-2 number, since 2×1272913444² = 3240617271831882272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1272913441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465247 + ... + 467974.

It is an arithmetic number, because the mean of its divisors is an integer number (104520864).

Almost surely, 2^1272913444 is an apocalyptic number.

It is an amenable number.

1272913444 is a deficient number, since it is larger than the sum of its proper divisors (1235587292).

1272913444 is a wasteful number, since it uses less digits than its factorization.

1272913444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933267 (or 933265 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 1272913444 is about 35677.9125510448. The cubic root of 1272913444 is about 1083.7596006984.

The spelling of 1272913444 in words is "one billion, two hundred seventy-two million, nine hundred thirteen thousand, four hundred forty-four".