12020004 has 36 divisors (see below), whose sum is σ = 30535596. Its totient is φ = 3986688.

The previous prime is 12019993. The next prime is 12020051. The reversal of 12020004 is 40002021.

12020004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6260004 + 5760000 = 2502^2 + 2400^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7672 + ... + 9104.

It is an arithmetic number, because the mean of its divisors is an integer number (848211).

Almost surely, 2^12020004 is an apocalyptic number.

It is an amenable number.

12020004 is an abundant number, since it is smaller than the sum of its proper divisors (18515592).

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

12020004 is a wasteful number, since it uses less digits than its factorization.

12020004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 12020004 is about 3466.9877415416. The cubic root of 12020004 is about 229.0699937959.

Adding to 12020004 its reverse (40002021), we get a palindrome (52022025).

The spelling of 12020004 in words is "twelve million, twenty thousand, four".