33228205 has 4 divisors (see below), whose sum is σ = 39873852. Its totient is φ = 26582560.

The previous prime is 33228199. The next prime is 33228227. The reversal of 33228205 is 50282233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50282233 = 157 ⋅320269.

It can be written as a sum of positive squares in 2 ways, for example, as 19105641 + 14122564 = 4371^2 + 3758^2 .

It is not a de Polignac number, because 33228205 - 2³ = 33228197 is a prime.

It is a super-2 number, since 2×33228205² = 2208227215044050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33228205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3322816 + ... + 3322825.

It is an arithmetic number, because the mean of its divisors is an integer number (9968463).

Almost surely, 2^33228205 is an apocalyptic number.

It is an amenable number.

33228205 is a deficient number, since it is larger than the sum of its proper divisors (6645647).

33228205 is an equidigital number, since it uses as much as digits as its factorization.

33228205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6645646.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 33228205 is about 5764.3911213588. The cubic root of 33228205 is about 321.4911042593.

It can be divided in two parts, 33228 and 205, that added together give a palindrome (33433).

The spelling of 33228205 in words is "thirty-three million, two hundred twenty-eight thousand, two hundred five".