20369205 has 16 divisors (see below), whose sum is σ = 36212160. Its totient is φ = 10863504.

The previous prime is 20369183. The next prime is 20369221. The reversal of 20369205 is 50296302.

It is not a de Polignac number, because 20369205 - 2¹⁹ = 19844917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75307 + ... + 75576.

It is an arithmetic number, because the mean of its divisors is an integer number (2263260).

Almost surely, 2^20369205 is an apocalyptic number.

It is an amenable number.

20369205 is a deficient number, since it is larger than the sum of its proper divisors (15842955).

20369205 is a wasteful number, since it uses less digits than its factorization.

20369205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150897 (or 150891 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20369205 is about 4513.2255649369. The cubic root of 20369205 is about 273.1018820314.

The spelling of 20369205 in words is "twenty million, three hundred sixty-nine thousand, two hundred five".