1272636716 has 24 divisors (see below), whose sum is σ = 2406124224. Its totient is φ = 585486720.

The previous prime is 1272636709. The next prime is 1272636737. The reversal of 1272636716 is 6176362721.

It is a super-2 number, since 2×1272636716² = 3239208421822529312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 22820 + ... + 55371.

It is an arithmetic number, because the mean of its divisors is an integer number (100255176).

Almost surely, 2^1272636716 is an apocalyptic number.

It is an amenable number.

1272636716 is a deficient number, since it is larger than the sum of its proper divisors (1133487508).

1272636716 is a wasteful number, since it uses less digits than its factorization.

1272636716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78521 (or 78519 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 1272636716 is about 35674.0341985596. The cubic root of 1272636716 is about 1083.6810595209.

The spelling of 1272636716 in words is "one billion, two hundred seventy-two million, six hundred thirty-six thousand, seven hundred sixteen".