12641860 has 48 divisors (see below), whose sum is σ = 33102720. Its totient is φ = 3939840.

The previous prime is 12641851. The next prime is 12641861. The reversal of 12641860 is 6814621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12641861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2565 + ... + 5644.

It is an arithmetic number, because the mean of its divisors is an integer number (689640).

Almost surely, 2^12641860 is an apocalyptic number.

12641860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12641860 is an abundant number, since it is smaller than the sum of its proper divisors (20460860).

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

12641860 is a wasteful number, since it uses less digits than its factorization.

12641860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236 (or 8234 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12641860 is about 3555.5393402408. The cubic root of 12641860 is about 232.9540823267.

The spelling of 12641860 in words is "twelve million, six hundred forty-one thousand, eight hundred sixty".