12937890 has 32 divisors (see below), whose sum is σ = 35487360. Its totient is φ = 2957184.

The previous prime is 12937877. The next prime is 12937913. The reversal of 12937890 is 9873921.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30595 + ... + 31014.

It is an arithmetic number, because the mean of its divisors is an integer number (1108980).

Almost surely, 2^12937890 is an apocalyptic number.

12937890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12937890 is an abundant number, since it is smaller than the sum of its proper divisors (22549470).

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

12937890 is a wasteful number, since it uses less digits than its factorization.

12937890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61626.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12937890 is about 3596.9278558236. The cubic root of 12937890 is about 234.7584057027.

The spelling of 12937890 in words is "twelve million, nine hundred thirty-seven thousand, eight hundred ninety".