12665272 has 32 divisors (see below), whose sum is σ = 26244000. Its totient is φ = 5699584.

The previous prime is 12665243. The next prime is 12665293. The reversal of 12665272 is 27256621.

It is a super-2 number, since 2×12665272² = 320818229667968, 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 7 ways as a sum of consecutive naturals, for example, 1104 + ... + 5152.

It is an arithmetic number, because the mean of its divisors is an integer number (820125).

Almost surely, 2^12665272 is an apocalyptic number.

It is an amenable number.

12665272 is an abundant number, since it is smaller than the sum of its proper divisors (13578728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12665272 is a wasteful number, since it uses less digits than its factorization.

12665272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095 (or 4091 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 12665272 is about 3558.8301448650. The cubic root of 12665272 is about 233.0977995131.

The spelling of 12665272 in words is "twelve million, six hundred sixty-five thousand, two hundred seventy-two".