1272652815 has 16 divisors (see below), whose sum is σ = 2327136768. Its totient is φ = 581784096.

The previous prime is 1272652807. The next prime is 1272652819. The reversal of 1272652815 is 5182562721.

It is not a de Polignac number, because 1272652815 - 2³ = 1272652807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272652819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6060147 + ... + 6060356.

It is an arithmetic number, because the mean of its divisors is an integer number (145446048).

Almost surely, 2^1272652815 is an apocalyptic number.

1272652815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1272652815 is a deficient number, since it is larger than the sum of its proper divisors (1054483953).

1272652815 is a wasteful number, since it uses less digits than its factorization.

1272652815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12120518.

The product of its digits is 67200, while the sum is 39.

The square root of 1272652815 is about 35674.2598381522. The cubic root of 1272652815 is about 1083.6856290647.

The spelling of 1272652815 in words is "one billion, two hundred seventy-two million, six hundred fifty-two thousand, eight hundred fifteen".