20004318 has 12 divisors (see below), whose sum is σ = 43342728. Its totient is φ = 6668100.

The previous prime is 20004311. The next prime is 20004323. The reversal of 20004318 is 81340002.

It is a happy number.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1111351 = 20004318 / (2 + 0 + 0 + 0 + 4 + 3 + 1 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20004318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555658 + ... + 555693.

It is an arithmetic number, because the mean of its divisors is an integer number (3611894).

Almost surely, 2^20004318 is an apocalyptic number.

20004318 is an abundant number, since it is smaller than the sum of its proper divisors (23338410).

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

20004318 is a wasteful number, since it uses less digits than its factorization.

20004318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111359 (or 1111356 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20004318 is about 4472.6186960214. The cubic root of 20004318 is about 271.4612950126.

The spelling of 20004318 in words is "twenty million, four thousand, three hundred eighteen".