1272431676 has 24 divisors (see below), whose sum is σ = 2970780624. Its totient is φ = 423890560.

The previous prime is 1272431621. The next prime is 1272431687. The reversal of 1272431676 is 6761342721.

It is a congruent number.

It is an unprimeable number.

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, 10155 + ... + 51458.

It is an arithmetic number, because the mean of its divisors is an integer number (123782526).

Almost surely, 2^1272431676 is an apocalyptic number.

It is an amenable number.

1272431676 is an abundant number, since it is smaller than the sum of its proper divisors (1698348948).

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

1272431676 is a wasteful number, since it uses less digits than its factorization.

1272431676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63341 (or 63339 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 1272431676 is about 35671.1602839044. The cubic root of 1272431676 is about 1083.6228575491.

The spelling of 1272431676 in words is "one billion, two hundred seventy-two million, four hundred thirty-one thousand, six hundred seventy-six".