20043802 has 8 divisors (see below), whose sum is σ = 30088116. Its totient is φ = 10014432.

The previous prime is 20043791. The next prime is 20043811. The reversal of 20043802 is 20834002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18653761 + 1390041 = 4319^2 + 1179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20043802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648 + ... + 6364.

Almost surely, 2^20043802 is an apocalyptic number.

20043802 is a deficient number, since it is larger than the sum of its proper divisors (10044314).

20043802 is a wasteful number, since it uses less digits than its factorization.

20043802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20043802 is about 4477.0304890630. The cubic root of 20043802 is about 271.6397787048.

Adding to 20043802 its reverse (20834002), we get a palindrome (40877804).

The spelling of 20043802 in words is "twenty million, forty-three thousand, eight hundred two".