12640850 has 12 divisors (see below), whose sum is σ = 23512074. Its totient is φ = 5056320.

The previous prime is 12640841. The next prime is 12640867. The reversal of 12640850 is 5804621.

It can be written as a sum of positive squares in 3 ways, for example, as 9740641 + 2900209 = 3121^2 + 1703^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126359 + ... + 126458.

Almost surely, 2^12640850 is an apocalyptic number.

12640850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12640850 is a deficient number, since it is larger than the sum of its proper divisors (10871224).

12640850 is a wasteful number, since it uses less digits than its factorization.

12640850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252829 (or 252824 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 12640850 is about 3555.3973055061. The cubic root of 12640850 is about 232.9478783375.

The spelling of 12640850 in words is "twelve million, six hundred forty thousand, eight hundred fifty".