12290915 has 48 divisors (see below), whose sum is σ = 19649952. Its totient is φ = 7289856.

The previous prime is 12290909. The next prime is 12290917. The reversal of 12290915 is 51909221.

It is not a de Polignac number, because 12290915 - 2⁶ = 12290851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12290917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54032 + ... + 54258.

It is an arithmetic number, because the mean of its divisors is an integer number (409374).

Almost surely, 2^12290915 is an apocalyptic number.

12290915 is a deficient number, since it is larger than the sum of its proper divisors (7359037).

12290915 is a wasteful number, since it uses less digits than its factorization.

12290915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 12290915 is about 3505.8401275586. The cubic root of 12290915 is about 230.7781770178.

The spelling of 12290915 in words is "twelve million, two hundred ninety thousand, nine hundred fifteen".