12281860 has 12 divisors (see below), whose sum is σ = 25791948. Its totient is φ = 4912736.

The previous prime is 12281831. The next prime is 12281881. The reversal of 12281860 is 6818221.

It can be written as a sum of positive squares in 2 ways, for example, as 4631104 + 7650756 = 2152^2 + 2766^2 .

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, 307027 + ... + 307066.

It is an arithmetic number, because the mean of its divisors is an integer number (2149329).

Almost surely, 2^12281860 is an apocalyptic number.

12281860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12281860 is an abundant number, since it is smaller than the sum of its proper divisors (13510088).

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

12281860 is a wasteful number, since it uses less digits than its factorization.

12281860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614102 (or 614100 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 12281860 is about 3504.5484730561. The cubic root of 12281860 is about 230.7214898963.

The spelling of 12281860 in words is "twelve million, two hundred eighty-one thousand, eight hundred sixty".