12243290 has 8 divisors (see below), whose sum is σ = 22037940. Its totient is φ = 4897312.

The previous prime is 12243289. The next prime is 12243313. The reversal of 12243290 is 9234221.

It can be written as a sum of positive squares in 2 ways, for example, as 12243001 + 289 = 3499^2 + 17^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 612155 + ... + 612174.

Almost surely, 2^12243290 is an apocalyptic number.

12243290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12243290 is a deficient number, since it is larger than the sum of its proper divisors (9794650).

12243290 is a wasteful number, since it uses less digits than its factorization.

12243290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224336.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12243290 is about 3499.0412972699. The cubic root of 12243290 is about 230.4797170822.

The spelling of 12243290 in words is "twelve million, two hundred forty-three thousand, two hundred ninety".