20112004 has 12 divisors (see below), whose sum is σ = 38395728. Its totient is φ = 9141800.

The previous prime is 20111999. The next prime is 20112007. The reversal of 20112004 is 40021102.

It is not an unprimeable number, because it can be changed into a prime (20112007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228502 + ... + 228589.

It is an arithmetic number, because the mean of its divisors is an integer number (3199644).

Almost surely, 2^20112004 is an apocalyptic number.

It is an amenable number.

20112004 is a deficient number, since it is larger than the sum of its proper divisors (18283724).

20112004 is a wasteful number, since it uses less digits than its factorization.

20112004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457106 (or 457104 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20112004 is about 4484.6408997823. The cubic root of 20112004 is about 271.9475280847.

Adding to 20112004 its reverse (40021102), we get a palindrome (60133106).

The spelling of 20112004 in words is "twenty million, one hundred twelve thousand, four".