12916290 has 16 divisors (see below), whose sum is σ = 30999168. Its totient is φ = 3444336.

The previous prime is 12916289. The next prime is 12916313. The reversal of 12916290 is 9261921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 430543 = 12916290 / (1 + 2 + 9 + 1 + 6 + 2 + 9 + 0).

It is a Curzon number.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215242 + ... + 215301.

It is an arithmetic number, because the mean of its divisors is an integer number (1937448).

Almost surely, 2^12916290 is an apocalyptic number.

12916290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12916290 is an abundant number, since it is smaller than the sum of its proper divisors (18082878).

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

12916290 is a wasteful number, since it uses less digits than its factorization.

12916290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430553.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 12916290 is about 3593.9240392640. The cubic root of 12916290 is about 234.6276887131.

The spelling of 12916290 in words is "twelve million, nine hundred sixteen thousand, two hundred ninety".