22724033 has 4 divisors (see below), whose sum is σ = 22733568. Its totient is φ = 22714500.

The previous prime is 22724029. The next prime is 22724041. The reversal of 22724033 is 33042722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33042722 = 2 ⋅16521361.

It is a cyclic number.

It is not a de Polignac number, because 22724033 - 2² = 22724029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22724003) 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, 2360 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (5683392).

Almost surely, 2^22724033 is an apocalyptic number.

It is an amenable number.

22724033 is a deficient number, since it is larger than the sum of its proper divisors (9535).

22724033 is an equidigital number, since it uses as much as digits as its factorization.

22724033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9534.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 22724033 is about 4766.9731486552. The cubic root of 22724033 is about 283.2447075367.

Adding to 22724033 its reverse (33042722), we get a palindrome (55766755).

The spelling of 22724033 in words is "twenty-two million, seven hundred twenty-four thousand, thirty-three".