20228205 has 8 divisors (see below), whose sum is σ = 32365152. Its totient is φ = 10788368.

The previous prime is 20228203. The next prime is 20228207. The reversal of 20228205 is 50282202.

It is an interprime number because it is at equal distance from previous prime (20228203) and next prime (20228207).

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

It is a cyclic number.

It is not a de Polignac number, because 20228205 - 2¹ = 20228203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20228203) 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, 674259 + ... + 674288.

It is an arithmetic number, because the mean of its divisors is an integer number (4045644).

Almost surely, 2^20228205 is an apocalyptic number.

It is an amenable number.

20228205 is a deficient number, since it is larger than the sum of its proper divisors (12136947).

20228205 is a wasteful number, since it uses less digits than its factorization.

20228205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348555.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20228205 is about 4497.5776813747. The cubic root of 20228205 is about 272.4702658127.

The spelling of 20228205 in words is "twenty million, two hundred twenty-eight thousand, two hundred five".