20010204 has 36 divisors (see below), whose sum is σ = 51444120. Its totient is φ = 6556320.

The previous prime is 20010197. The next prime is 20010209. The reversal of 20010204 is 40201002.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2587 + ... + 6834.

Almost surely, 2^20010204 is an apocalyptic number.

It is an amenable number.

20010204 is an abundant number, since it is smaller than the sum of its proper divisors (31433916).

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

20010204 is a wasteful number, since it uses less digits than its factorization.

20010204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490 (or 9485 counting only the distinct ones).

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

The square root of 20010204 is about 4473.2766514044. The cubic root of 20010204 is about 271.4879170065.

Adding to 20010204 its reverse (40201002), we get a palindrome (60211206).

It can be divided in two parts, 200 and 10204, that added together give a square (10404 = 102²).

The spelling of 20010204 in words is "twenty million, ten thousand, two hundred four".