12315290 has 32 divisors (see below), whose sum is σ = 24279696. Its totient is φ = 4469760.

The previous prime is 12315283. The next prime is 12315299. The reversal of 12315290 is 9251321.

It can be written as a sum of positive squares in 8 ways, for example, as 2209 + 12313081 = 47^2 + 3509^2 .

It is not an unprimeable number, because it can be changed into a prime (12315299) 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, 7154 + ... + 8706.

Almost surely, 2^12315290 is an apocalyptic number.

12315290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12315290 is a deficient number, since it is larger than the sum of its proper divisors (11964406).

12315290 is a wasteful number, since it uses less digits than its factorization.

12315290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12315290 is about 3509.3147479244. The cubic root of 12315290 is about 230.9306338953.

The spelling of 12315290 in words is "twelve million, three hundred fifteen thousand, two hundred ninety".