23442220 has 12 divisors (see below), whose sum is σ = 49228704. Its totient is φ = 9376880.

The previous prime is 23442217. The next prime is 23442229. The reversal of 23442220 is 2224432.

It is not an unprimeable number, because it can be changed into a prime (23442229) 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 3 ways as a sum of consecutive naturals, for example, 586036 + ... + 586075.

It is an arithmetic number, because the mean of its divisors is an integer number (4102392).

Almost surely, 2^23442220 is an apocalyptic number.

23442220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23442220 is an abundant number, since it is smaller than the sum of its proper divisors (25786484).

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

23442220 is a wasteful number, since it uses less digits than its factorization.

23442220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172120 (or 1172118 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 23442220 is about 4841.7166377226. The cubic root of 23442220 is about 286.1977701977.

Adding to 23442220 its reverse (2224432), we get a palindrome (25666652).

The spelling of 23442220 in words is "twenty-three million, four hundred forty-two thousand, two hundred twenty".