12630990 has 16 divisors (see below), whose sum is σ = 30314448. Its totient is φ = 3368256.

The previous prime is 12630977. The next prime is 12630997. The reversal of 12630990 is 9903621.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 421033 = 12630990 / (1 + 2 + 6 + 3 + 0 + 9 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12630997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210487 + ... + 210546.

It is an arithmetic number, because the mean of its divisors is an integer number (1894653).

Almost surely, 2^12630990 is an apocalyptic number.

12630990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12630990 is an abundant number, since it is smaller than the sum of its proper divisors (17683458).

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

12630990 is a wasteful number, since it uses less digits than its factorization.

12630990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421043.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 12630990 is about 3554.0104107895. The cubic root of 12630990 is about 232.8872952930.

The spelling of 12630990 in words is "twelve million, six hundred thirty thousand, nine hundred ninety".