12630440 has 32 divisors (see below), whose sum is σ = 29916000. Its totient is φ = 4785984.

The previous prime is 12630407. The next prime is 12630461. The reversal of 12630440 is 4403621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 7550 + ... + 9069.

It is an arithmetic number, because the mean of its divisors is an integer number (934875).

Almost surely, 2^12630440 is an apocalyptic number.

12630440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12630440 is an abundant number, since it is smaller than the sum of its proper divisors (17285560).

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

12630440 is a wasteful number, since it uses less digits than its factorization.

12630440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16649 (or 16645 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 12630440 is about 3553.9330325711. The cubic root of 12630440 is about 232.8839149860.

The spelling of 12630440 in words is "twelve million, six hundred thirty thousand, four hundred forty".