23220433 has 4 divisors (see below), whose sum is σ = 23302768. Its totient is φ = 23138100.

The previous prime is 23220403. The next prime is 23220437. The reversal of 23220433 is 33402232.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23220433 is a prime.

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 23220433.

It is not an unprimeable number, because it can be changed into a prime (23220437) 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, 40743 + ... + 41308.

It is an arithmetic number, because the mean of its divisors is an integer number (5825692).

Almost surely, 2^23220433 is an apocalyptic number.

It is an amenable number.

23220433 is a deficient number, since it is larger than the sum of its proper divisors (82335).

23220433 is an equidigital number, since it uses as much as digits as its factorization.

23220433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82334.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 23220433 is about 4818.7584500574. The cubic root of 23220433 is about 285.2923357200.

Adding to 23220433 its reverse (33402232), we get a palindrome (56622665).

It can be divided in two parts, 23220 and 433, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23220433 in words is "twenty-three million, two hundred twenty thousand, four hundred thirty-three".