23212242 has 48 divisors (see below), whose sum is σ = 54991872. Its totient is φ = 7044480.

The previous prime is 23212207. The next prime is 23212247. The reversal of 23212242 is 24221232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23212247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8263 + ... + 10709.

It is an arithmetic number, because the mean of its divisors is an integer number (1145664).

Almost surely, 2^23212242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23212242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27495936).

23212242 is an abundant number, since it is smaller than the sum of its proper divisors (31779630).

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

23212242 is a wasteful number, since it uses less digits than its factorization.

23212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 2500 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 23212242 is about 4817.9084673746. The cubic root of 23212242 is about 285.2587861827.

Adding to 23212242 its reverse (24221232), we get a palindrome (47433474).

The spelling of 23212242 in words is "twenty-three million, two hundred twelve thousand, two hundred forty-two".