20331204 has 48 divisors (see below), whose sum is σ = 50433600. Its totient is φ = 6362496.

The previous prime is 20331191. The next prime is 20331209. The reversal of 20331204 is 40213302.

It is not an unprimeable number, because it can be changed into a prime (20331209) 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, 12087 + ... + 13665.

It is an arithmetic number, because the mean of its divisors is an integer number (1050700).

Almost surely, 2^20331204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25216800).

20331204 is an abundant number, since it is smaller than the sum of its proper divisors (30102396).

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

20331204 is a wasteful number, since it uses less digits than its factorization.

20331204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20331204 is about 4509.0136393673. The cubic root of 20331204 is about 272.9319424065.

Adding to 20331204 its reverse (40213302), we get a palindrome (60544506).

The spelling of 20331204 in words is "twenty million, three hundred thirty-one thousand, two hundred four".