12165090 has 64 divisors (see below), whose sum is σ = 34027776. Its totient is φ = 2725632.

The previous prime is 12165059. The next prime is 12165103. The reversal of 12165090 is 9056121.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12165090.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10584 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (531684).

Almost surely, 2^12165090 is an apocalyptic number.

12165090 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 12165090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17013888).

12165090 is an abundant number, since it is smaller than the sum of its proper divisors (21862686).

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

12165090 is a wasteful number, since it uses less digits than its factorization.

12165090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 12165090 is about 3487.8489072780. The cubic root of 12165090 is about 229.9879640835.

The spelling of 12165090 in words is "twelve million, one hundred sixty-five thousand, ninety".