23240022 has 32 divisors (see below), whose sum is σ = 50813952. Its totient is φ = 7042464.

The previous prime is 23240011. The next prime is 23240029. The reversal of 23240022 is 22004232.

It is a junction number, because it is equal to n+sod(n) for n = 23239983 and 23240010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3003 + ... + 7449.

It is an arithmetic number, because the mean of its divisors is an integer number (1587936).

Almost surely, 2^23240022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23240022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25406976).

23240022 is an abundant number, since it is smaller than the sum of its proper divisors (27573930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23240022 is a wasteful number, since it uses less digits than its factorization.

23240022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 23240022 is about 4820.7905990615. The cubic root of 23240022 is about 285.3725383698.

Adding to 23240022 its reverse (22004232), we get a palindrome (45244254).

The spelling of 23240022 in words is "twenty-three million, two hundred forty thousand, twenty-two".