1272154652 has 12 divisors (see below), whose sum is σ = 2343442920. Its totient is φ = 602599536.

The previous prime is 1272154627. The next prime is 1272154669. The reversal of 1272154652 is 2564512721.

It is a super-2 number, since 2×1272154652² = 3236754917210482208, which contains 22 as substring.

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, 8369363 + ... + 8369514.

It is an arithmetic number, because the mean of its divisors is an integer number (195286910).

Almost surely, 2^1272154652 is an apocalyptic number.

It is an amenable number.

1272154652 is a deficient number, since it is larger than the sum of its proper divisors (1071288268).

1272154652 is a wasteful number, since it uses less digits than its factorization.

1272154652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16738900 (or 16738898 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 1272154652 is about 35667.2770477366. The cubic root of 1272154652 is about 1083.5442125076.

The spelling of 1272154652 in words is "one billion, two hundred seventy-two million, one hundred fifty-four thousand, six hundred fifty-two".