22620233 has 4 divisors (see below), whose sum is σ = 23171988. Its totient is φ = 22068480.

The previous prime is 22620229. The next prime is 22620259. The reversal of 22620233 is 33202622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 22024249 = 772^2 + 4693^2 .

It is a cyclic number.

It is not a de Polignac number, because 22620233 - 2² = 22620229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22620223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275816 + ... + 275897.

It is an arithmetic number, because the mean of its divisors is an integer number (5792997).

Almost surely, 2^22620233 is an apocalyptic number.

It is an amenable number.

22620233 is a deficient number, since it is larger than the sum of its proper divisors (551755).

22620233 is an equidigital number, since it uses as much as digits as its factorization.

22620233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551754.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 22620233 is about 4756.0732752976. The cubic root of 22620233 is about 282.8127759813.

Adding to 22620233 its reverse (33202622), we get a palindrome (55822855).

The spelling of 22620233 in words is "twenty-two million, six hundred twenty thousand, two hundred thirty-three".