12813272 has 8 divisors (see below), whose sum is σ = 24024900. Its totient is φ = 6406632.

The previous prime is 12813263. The next prime is 12813301. The reversal of 12813272 is 27231821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800822 + ... + 800837.

Almost surely, 2^12813272 is an apocalyptic number.

It is an amenable number.

12813272 is a deficient number, since it is larger than the sum of its proper divisors (11211628).

12813272 is a wasteful number, since it uses less digits than its factorization.

12813272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601665 (or 1601661 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 12813272 is about 3579.5631018324. The cubic root of 12813272 is about 234.0022402201.

The spelling of 12813272 in words is "twelve million, eight hundred thirteen thousand, two hundred seventy-two".