12561760 has 24 divisors (see below), whose sum is σ = 29677536. Its totient is φ = 5024640.

The previous prime is 12561751. The next prime is 12561799. The reversal of 12561760 is 6716521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39096 + ... + 39415.

It is an arithmetic number, because the mean of its divisors is an integer number (1236564).

Almost surely, 2^12561760 is an apocalyptic number.

12561760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12561760 is an abundant number, since it is smaller than the sum of its proper divisors (17115776).

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

12561760 is an equidigital number, since it uses as much as digits as its factorization.

12561760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78526 (or 78518 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12561760 is about 3544.2573270010. The cubic root of 12561760 is about 232.4610332815.

The spelling of 12561760 in words is "twelve million, five hundred sixty-one thousand, seven hundred sixty".