20004207 has 16 divisors (see below), whose sum is σ = 28984320. Its totient is φ = 12225600.

The previous prime is 20004199. The next prime is 20004211. The reversal of 20004207 is 70240002.

It is not a de Polignac number, because 20004207 - 2³ = 20004199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3894 + ... + 7427.

It is an arithmetic number, because the mean of its divisors is an integer number (1811520).

Almost surely, 2^20004207 is an apocalyptic number.

20004207 is a deficient number, since it is larger than the sum of its proper divisors (8980113).

20004207 is a wasteful number, since it uses less digits than its factorization.

20004207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 20004207 is about 4472.6062871664. The cubic root of 20004207 is about 271.4607929167.

Adding to 20004207 its reverse (70240002), we get a palindrome (90244209).

The spelling of 20004207 in words is "twenty million, four thousand, two hundred seven".