20162205 has 24 divisors (see below), whose sum is σ = 39940992. Its totient is φ = 9216864.

The previous prime is 20162171. The next prime is 20162213. The reversal of 20162205 is 50226102.

It is not a de Polignac number, because 20162205 - 2⁹ = 20161693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31689 + ... + 32318.

It is an arithmetic number, because the mean of its divisors is an integer number (1664208).

Almost surely, 2^20162205 is an apocalyptic number.

It is an amenable number.

20162205 is a deficient number, since it is larger than the sum of its proper divisors (19778787).

20162205 is a wasteful number, since it uses less digits than its factorization.

20162205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64025 (or 64022 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20162205 is about 4490.2344036809. The cubic root of 20162205 is about 272.1736069107.

Adding to 20162205 its reverse (50226102), we get a palindrome (70388307).

The spelling of 20162205 in words is "twenty million, one hundred sixty-two thousand, two hundred five".