12819990 has 16 divisors (see below), whose sum is σ = 30768048. Its totient is φ = 3418656.

The previous prime is 12819971. The next prime is 12820009. The reversal of 12819990 is 9991821.

It is a happy number.

12819990 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12819971) and next prime (12820009).

It is a Curzon number.

It is a congruent number.

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, 213637 + ... + 213696.

It is an arithmetic number, because the mean of its divisors is an integer number (1923003).

Almost surely, 2^12819990 is an apocalyptic number.

12819990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12819990 is an abundant number, since it is smaller than the sum of its proper divisors (17948058).

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

12819990 is a wasteful number, since it uses less digits than its factorization.

12819990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427343.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 12819990 is about 3580.5013615414. The cubic root of 12819990 is about 234.0431288756.

The spelling of 12819990 in words is "twelve million, eight hundred nineteen thousand, nine hundred ninety".