12285040 has 20 divisors (see below), whose sum is σ = 28562904. Its totient is φ = 4913984.

The previous prime is 12285037. The next prime is 12285047. The reversal of 12285040 is 4058221.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12285047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76702 + ... + 76861.

Almost surely, 2^12285040 is an apocalyptic number.

12285040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12285040 is an abundant number, since it is smaller than the sum of its proper divisors (16277864).

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

12285040 is a wasteful number, since it uses less digits than its factorization.

12285040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153576 (or 153570 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 12285040 is about 3505.0021397996. The cubic root of 12285040 is about 230.7414008605.

The spelling of 12285040 in words is "twelve million, two hundred eighty-five thousand, forty".