1272868272 has 60 divisors (see below), whose sum is σ = 3836289184. Its totient is φ = 391651200.

The previous prime is 1272868271. The next prime is 1272868283. The reversal of 1272868272 is 2728682721.

It is not an unprimeable number, because it can be changed into a prime (1272868271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338104 + ... + 341847.

Almost surely, 2^1272868272 is an apocalyptic number.

1272868272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1272868272 is an abundant number, since it is smaller than the sum of its proper divisors (2563420912).

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

1272868272 is a wasteful number, since it uses less digits than its factorization.

1272868272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679978 (or 679969 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 1272868272 is about 35677.2794926967. The cubic root of 1272868272 is about 1083.7467807202.

The spelling of 1272868272 in words is "one billion, two hundred seventy-two million, eight hundred sixty-eight thousand, two hundred seventy-two".