12907072 has 14 divisors (see below), whose sum is σ = 25612598. Its totient is φ = 6453504.

The previous prime is 12907049. The next prime is 12907073. The reversal of 12907072 is 27070921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6677056 + 6230016 = 2584^2 + 2496^2 .

It is a super-2 number, since 2×12907072² = 333185015226368, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12907072.

It is not an unprimeable number, because it can be changed into a prime (12907073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100773 + ... + 100900.

Almost surely, 2^12907072 is an apocalyptic number.

It is an amenable number.

12907072 is a deficient number, since it is larger than the sum of its proper divisors (12705526).

12907072 is an equidigital number, since it uses as much as digits as its factorization.

12907072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201685 (or 201675 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 12907072 is about 3592.6413681301. The cubic root of 12907072 is about 234.5718596593.

Adding to 12907072 its reverse (27070921), we get a palindrome (39977993).

The spelling of 12907072 in words is "twelve million, nine hundred seven thousand, seventy-two".