22440233 has 4 divisors (see below), whose sum is σ = 22533588. Its totient is φ = 22346880.

The previous prime is 22440179. The next prime is 22440239. The reversal of 22440233 is 33204422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33204422 = 2 ⋅16602211.

It can be written as a sum of positive squares in 2 ways, for example, as 13271449 + 9168784 = 3643^2 + 3028^2 .

It is a cyclic number.

It is not a de Polignac number, because 22440233 - 2¹⁶ = 22374697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22440239) 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, 46316 + ... + 46797.

It is an arithmetic number, because the mean of its divisors is an integer number (5633397).

Almost surely, 2^22440233 is an apocalyptic number.

It is an amenable number.

22440233 is a deficient number, since it is larger than the sum of its proper divisors (93355).

22440233 is an equidigital number, since it uses as much as digits as its factorization.

22440233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93354.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 22440233 is about 4737.1123060362. The cubic root of 22440233 is about 282.0606185598.

Adding to 22440233 its reverse (33204422), we get a palindrome (55644655).

The spelling of 22440233 in words is "twenty-two million, four hundred forty thousand, two hundred thirty-three".