12285140 has 24 divisors (see below), whose sum is σ = 29484672. Its totient is φ = 4212000.

The previous prime is 12285137. The next prime is 12285167. The reversal of 12285140 is 4158221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43736 + ... + 44015.

It is an arithmetic number, because the mean of its divisors is an integer number (1228528).

Almost surely, 2^12285140 is an apocalyptic number.

12285140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12285140 is an abundant number, since it is smaller than the sum of its proper divisors (17199532).

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

12285140 is a wasteful number, since it uses less digits than its factorization.

12285140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87767 (or 87765 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 12285140 is about 3505.0164050971. The cubic root of 12285140 is about 230.7420269357.

The spelling of 12285140 in words is "twelve million, two hundred eighty-five thousand, one hundred forty".