12628771 has 8 divisors (see below), whose sum is σ = 13213440. Its totient is φ = 12047112.

The previous prime is 12628757. The next prime is 12628783. The reversal of 12628771 is 17782621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12628771 - 2¹⁹ = 12104483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12628741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16626 + ... + 17368.

It is an arithmetic number, because the mean of its divisors is an integer number (1651680).

Almost surely, 2^12628771 is an apocalyptic number.

12628771 is a deficient number, since it is larger than the sum of its proper divisors (584669).

12628771 is an equidigital number, since it uses as much as digits as its factorization.

12628771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505.

The product of its digits is 9408, while the sum is 34.

The square root of 12628771 is about 3553.6982145365. The cubic root of 12628771 is about 232.8736566900.

The spelling of 12628771 in words is "twelve million, six hundred twenty-eight thousand, seven hundred seventy-one".