12255990 has 16 divisors (see below), whose sum is σ = 29414448. Its totient is φ = 3268256.

The previous prime is 12255983. The next prime is 12256001. The reversal of 12255990 is 9955221.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 204237 + ... + 204296.

It is an arithmetic number, because the mean of its divisors is an integer number (1838403).

Almost surely, 2^12255990 is an apocalyptic number.

12255990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12255990 is an abundant number, since it is smaller than the sum of its proper divisors (17158458).

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

12255990 is a wasteful number, since it uses less digits than its factorization.

12255990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408543.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 12255990 is about 3500.8556097046. The cubic root of 12255990 is about 230.5593819680.

The spelling of 12255990 in words is "twelve million, two hundred fifty-five thousand, nine hundred ninety".