20042004 has 48 divisors (see below), whose sum is σ = 48037248. Its totient is φ = 6501888.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042004 is 40024002.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 119929 + ... + 120095.

It is an arithmetic number, because the mean of its divisors is an integer number (1000776).

Almost surely, 2^20042004 is an apocalyptic number.

It is an amenable number.

20042004 is an abundant number, since it is smaller than the sum of its proper divisors (27995244).

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

20042004 is a wasteful number, since it uses less digits than its factorization.

20042004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20042004 is about 4476.8296818173. The cubic root of 20042004 is about 271.6316561120.

Adding to 20042004 its reverse (40024002), we get a palindrome (60066006).

The spelling of 20042004 in words is "twenty million, forty-two thousand, four".