12027990 has 32 divisors (see below), whose sum is σ = 31088736. Its totient is φ = 2960640.

The previous prime is 12027971. The next prime is 12028001. The reversal of 12027990 is 9972021.

12027990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15031 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (971523).

Almost surely, 2^12027990 is an apocalyptic number.

12027990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12027990 is an abundant number, since it is smaller than the sum of its proper divisors (19060746).

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

12027990 is a wasteful number, since it uses less digits than its factorization.

12027990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30864.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 12027990 is about 3468.1392705599. The cubic root of 12027990 is about 229.1207133571.

The spelling of 12027990 in words is "twelve million, twenty-seven thousand, nine hundred ninety".