12628817 has 6 divisors (see below), whose sum is σ = 13202322. Its totient is φ = 12079232.

The previous prime is 12628801. The next prime is 12628843. The reversal of 12628817 is 71882621.

It can be written as a sum of positive squares in only one way, i.e., 8532241 + 4096576 = 2921^2 + 2024^2 .

It is not a de Polignac number, because 12628817 - 2⁴ = 12628801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12628117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11408 + ... + 12465.

It is an arithmetic number, because the mean of its divisors is an integer number (2200387).

Almost surely, 2^12628817 is an apocalyptic number.

It is an amenable number.

12628817 is a deficient number, since it is larger than the sum of its proper divisors (573505).

12628817 is an equidigital number, since it uses as much as digits as its factorization.

12628817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23919 (or 23896 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 12628817 is about 3553.7046866615. The cubic root of 12628817 is about 232.8739394353.

The spelling of 12628817 in words is "twelve million, six hundred twenty-eight thousand, eight hundred seventeen".