20412205 has 8 divisors (see below), whose sum is σ = 26721504. Its totient is φ = 14845200.

The previous prime is 20412193. The next prime is 20412209. The reversal of 20412205 is 50221402.

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

It is not a de Polignac number, because 20412205 - 2²³ = 12023597 is a prime.

It is a super-2 number, since 2×20412205² = 833316225924050, 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 (20412209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185511 + ... + 185620.

It is an arithmetic number, because the mean of its divisors is an integer number (3340188).

Almost surely, 2^20412205 is an apocalyptic number.

It is an amenable number.

20412205 is a deficient number, since it is larger than the sum of its proper divisors (6309299).

20412205 is a wasteful number, since it uses less digits than its factorization.

20412205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371147.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20412205 is about 4517.9868304368. The cubic root of 20412205 is about 273.2939223698.

Adding to 20412205 its reverse (50221402), we get a palindrome (70633607).

The spelling of 20412205 in words is "twenty million, four hundred twelve thousand, two hundred five".