12290187 has 24 divisors (see below), whose sum is σ = 20285184. Its totient is φ = 6480864.

The previous prime is 12290183. The next prime is 12290189. The reversal of 12290187 is 78109221.

12290187 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12290187 - 2² = 12290183 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

12290187 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12290183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1818 + ... + 5280.

It is an arithmetic number, because the mean of its divisors is an integer number (845216).

Almost surely, 2^12290187 is an apocalyptic number.

12290187 is a deficient number, since it is larger than the sum of its proper divisors (7994997).

12290187 is a wasteful number, since it uses less digits than its factorization.

12290187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12290187 is about 3505.7362992672. The cubic root of 12290187 is about 230.7736205404.

It can be divided in two parts, 122 and 90187, that added together give a palindrome (90309).

The spelling of 12290187 in words is "twelve million, two hundred ninety thousand, one hundred eighty-seven".