12295280 has 40 divisors (see below), whose sum is σ = 30094800. Its totient is φ = 4658688.

The previous prime is 12295277. The next prime is 12295321. The reversal of 12295280 is 8259221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2525 + ... + 5564.

It is an arithmetic number, because the mean of its divisors is an integer number (752370).

Almost surely, 2^12295280 is an apocalyptic number.

12295280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12295280 is an abundant number, since it is smaller than the sum of its proper divisors (17799520).

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

12295280 is a wasteful number, since it uses less digits than its factorization.

12295280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121 (or 8115 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12295280 is about 3506.4626049624. The cubic root of 12295280 is about 230.8054933328.

The spelling of 12295280 in words is "twelve million, two hundred ninety-five thousand, two hundred eighty".