12318990 has 32 divisors (see below), whose sum is σ = 29690496. Its totient is φ = 3271200.

The previous prime is 12318979. The next prime is 12318991. The reversal of 12318990 is 9981321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7765 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (927828).

Almost surely, 2^12318990 is an apocalyptic number.

12318990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12318990 is an abundant number, since it is smaller than the sum of its proper divisors (17371506).

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

12318990 is a wasteful number, since it uses less digits than its factorization.

12318990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 12318990 is about 3509.8418767802. The cubic root of 12318990 is about 230.9537584770.

The spelling of 12318990 in words is "twelve million, three hundred eighteen thousand, nine hundred ninety".