20433204 has 36 divisors (see below), whose sum is σ = 56347200. Its totient is φ = 6191760.

The previous prime is 20433181. The next prime is 20433229. The reversal of 20433204 is 40233402.

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 (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25404 + ... + 26195.

It is an arithmetic number, because the mean of its divisors is an integer number (1565200).

Almost surely, 2^20433204 is an apocalyptic number.

It is an amenable number.

20433204 is an abundant number, since it is smaller than the sum of its proper divisors (35913996).

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

20433204 is a wasteful number, since it uses less digits than its factorization.

20433204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51620 (or 51615 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20433204 is about 4520.3101663492. The cubic root of 20433204 is about 273.3876070427.

Adding to 20433204 its reverse (40233402), we get a palindrome (60666606).

The spelling of 20433204 in words is "twenty million, four hundred thirty-three thousand, two hundred four".