20243204 has 6 divisors (see below), whose sum is σ = 35425614. Its totient is φ = 10121600.

The previous prime is 20243203. The next prime is 20243207. The reversal of 20243204 is 40234202.

It can be written as a sum of positive squares in only one way, i.e., 15225604 + 5017600 = 3902^2 + 2240^2 .

It is not an unprimeable number, because it can be changed into a prime (20243203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530397 + ... + 2530404.

It is an arithmetic number, because the mean of its divisors is an integer number (5904269).

Almost surely, 2^20243204 is an apocalyptic number.

It is an amenable number.

20243204 is a deficient number, since it is larger than the sum of its proper divisors (15182410).

20243204 is a wasteful number, since it uses less digits than its factorization.

20243204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060805 (or 5060803 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20243204 is about 4499.2448255235. The cubic root of 20243204 is about 272.5375937809.

Adding to 20243204 its reverse (40234202), we get a palindrome (60477406).

The spelling of 20243204 in words is "twenty million, two hundred forty-three thousand, two hundred four".