1272520436 has 12 divisors (see below), whose sum is σ = 2429357280. Its totient is φ = 578418360.

The previous prime is 1272520429. The next prime is 1272520453. The reversal of 1272520436 is 6340252721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14460416 + ... + 14460503.

It is an arithmetic number, because the mean of its divisors is an integer number (202446440).

Almost surely, 2^1272520436 is an apocalyptic number.

It is an amenable number.

1272520436 is a deficient number, since it is larger than the sum of its proper divisors (1156836844).

1272520436 is a wasteful number, since it uses less digits than its factorization.

1272520436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28920934 (or 28920932 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1272520436 is about 35672.4044045254. The cubic root of 1272520436 is about 1083.6480534346.

The spelling of 1272520436 in words is "one billion, two hundred seventy-two million, five hundred twenty thousand, four hundred thirty-six".