1272791368 has 32 divisors (see below), whose sum is σ = 2410308000. Its totient is φ = 630073728.

The previous prime is 1272791363. The next prime is 1272791371. The reversal of 1272791368 is 8631972721.

It is a super-2 number, since 2×1272791368² = 3239995732910622848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1272791363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367308 + ... + 370756.

It is an arithmetic number, because the mean of its divisors is an integer number (75322125).

Almost surely, 2^1272791368 is an apocalyptic number.

It is an amenable number.

1272791368 is a deficient number, since it is larger than the sum of its proper divisors (1137516632).

1272791368 is a wasteful number, since it uses less digits than its factorization.

1272791368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901 (or 3897 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 1272791368 is about 35676.2017036567. The cubic root of 1272791368 is about 1083.7249543871.

The spelling of 1272791368 in words is "one billion, two hundred seventy-two million, seven hundred ninety-one thousand, three hundred sixty-eight".