12966990 has 64 divisors (see below), whose sum is σ = 32735232. Its totient is φ = 3283200.

The previous prime is 12966977. The next prime is 12966991. The reversal of 12966990 is 9966921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12966991) 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 31 ways as a sum of consecutive naturals, for example, 67795 + ... + 67985.

It is an arithmetic number, because the mean of its divisors is an integer number (511488).

Almost surely, 2^12966990 is an apocalyptic number.

12966990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12966990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16367616).

12966990 is an abundant number, since it is smaller than the sum of its proper divisors (19768242).

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

12966990 is a wasteful number, since it uses less digits than its factorization.

12966990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 12966990 is about 3600.9707024634. The cubic root of 12966990 is about 234.9342807024.

The spelling of 12966990 in words is "twelve million, nine hundred sixty-six thousand, nine hundred ninety".