12936890 has 16 divisors (see below), whose sum is σ = 23528232. Its totient is φ = 5121024.

The previous prime is 12936877. The next prime is 12936901. The reversal of 12936890 is 9863921.

It can be written as a sum of positive squares in 4 ways, for example, as 8779369 + 4157521 = 2963^2 + 2039^2 .

It is an unprimeable number.

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, 5699 + ... + 7638.

Almost surely, 2^12936890 is an apocalyptic number.

12936890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12936890 is a deficient number, since it is larger than the sum of its proper divisors (10591342).

12936890 is a wasteful number, since it uses less digits than its factorization.

12936890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13441.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 12936890 is about 3596.7888456233. The cubic root of 12936890 is about 234.7523572035.

The spelling of 12936890 in words is "twelve million, nine hundred thirty-six thousand, eight hundred ninety".