20004069 has 8 divisors (see below), whose sum is σ = 26746240. Its totient is φ = 13298976.

The previous prime is 20004059. The next prime is 20004071. The reversal of 20004069 is 96040002.

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

It is not a de Polignac number, because 20004069 - 2¹⁶ = 19938533 is a prime.

It is a super-2 number, since 2×20004069² = 800325553113522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004059) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7984 + ... + 10185.

It is an arithmetic number, because the mean of its divisors is an integer number (3343280).

Almost surely, 2^20004069 is an apocalyptic number.

It is an amenable number.

20004069 is a deficient number, since it is larger than the sum of its proper divisors (6742171).

20004069 is a wasteful number, since it uses less digits than its factorization.

20004069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18539.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20004069 is about 4472.5908598932. The cubic root of 20004069 is about 271.4601686867.

The spelling of 20004069 in words is "twenty million, four thousand, sixty-nine".