12961860 has 48 divisors (see below), whose sum is σ = 36456000. Its totient is φ = 3441024.

The previous prime is 12961849. The next prime is 12961867. The reversal of 12961860 is 6816921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12961867) 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, 20631 + ... + 21249.

It is an arithmetic number, because the mean of its divisors is an integer number (759500).

Almost surely, 2^12961860 is an apocalyptic number.

12961860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12961860 is an abundant number, since it is smaller than the sum of its proper divisors (23494140).

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

12961860 is a wasteful number, since it uses less digits than its factorization.

12961860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12961860 is about 3600.2583240651. The cubic root of 12961860 is about 234.9032950527.

The spelling of 12961860 in words is "twelve million, nine hundred sixty-one thousand, eight hundred sixty".