20041004 has 24 divisors (see below), whose sum is σ = 37782528. Its totient is φ = 9274320.

The previous prime is 20041003. The next prime is 20041031. The reversal of 20041004 is 40014002.

It is not an unprimeable number, because it can be changed into a prime (20041003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662 + ... + 6365.

It is an arithmetic number, because the mean of its divisors is an integer number (1574272).

Almost surely, 2^20041004 is an apocalyptic number.

It is an amenable number.

20041004 is a deficient number, since it is larger than the sum of its proper divisors (17741524).

20041004 is a wasteful number, since it uses less digits than its factorization.

20041004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7085 (or 7083 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20041004 is about 4476.7179942453. The cubic root of 20041004 is about 271.6271383307.

Adding to 20041004 its reverse (40014002), we get a palindrome (60055006).

The spelling of 20041004 in words is "twenty million, forty-one thousand, four".