12108690 has 112 divisors (see below), whose sum is σ = 35885376. Its totient is φ = 2916000.

The previous prime is 12108673. The next prime is 12108713. The reversal of 12108690 is 9680121.

It is a super-2 number, since 2×12108690² = 293240747032200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 80115 + ... + 80265.

Almost surely, 2^12108690 is an apocalyptic number.

12108690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12108690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17942688).

12108690 is an abundant number, since it is smaller than the sum of its proper divisors (23776686).

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

12108690 is a wasteful number, since it uses less digits than its factorization.

12108690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 12108690 is about 3479.7543016713. The cubic root of 12108690 is about 229.6319886675.

The spelling of 12108690 in words is "twelve million, one hundred eight thousand, six hundred ninety".