20205069 has 8 divisors (see below), whose sum is σ = 26973312. Its totient is φ = 13453440.

The previous prime is 20205041. The next prime is 20205077. The reversal of 20205069 is 96050202.

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

It is not a de Polignac number, because 20205069 - 2⁸ = 20204813 is a prime.

It is a super-2 number, since 2×20205069² = 816489626589522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 964 + ... + 6429.

It is an arithmetic number, because the mean of its divisors is an integer number (3371664).

Almost surely, 2^20205069 is an apocalyptic number.

It is an amenable number.

20205069 is a deficient number, since it is larger than the sum of its proper divisors (6768243).

20205069 is an equidigital number, since it uses as much as digits as its factorization.

20205069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20205069 is about 4495.0048943244. The cubic root of 20205069 is about 272.3663469372.

The spelling of 20205069 in words is "twenty million, two hundred five thousand, sixty-nine".