20069205 has 32 divisors (see below), whose sum is σ = 34957440. Its totient is φ = 9772800.

The previous prime is 20069171. The next prime is 20069209. The reversal of 20069205 is 50296002.

It is not a de Polignac number, because 20069205 - 2¹² = 20065109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20069209) 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 31 ways as a sum of consecutive naturals, for example, 19186 + ... + 20204.

It is an arithmetic number, because the mean of its divisors is an integer number (1092420).

Almost surely, 2^20069205 is an apocalyptic number.

It is an amenable number.

20069205 is a deficient number, since it is larger than the sum of its proper divisors (14888235).

20069205 is a wasteful number, since it uses less digits than its factorization.

20069205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141.

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

The square root of 20069205 is about 4479.8666274790. The cubic root of 20069205 is about 271.7544866860.

It can be divided in two parts, 2006 and 9205, that added together give a palindrome (11211).

The spelling of 20069205 in words is "twenty million, sixty-nine thousand, two hundred five".