22213752 has 32 divisors (see below), whose sum is σ = 60583680. Its totient is φ = 6731360.

The previous prime is 22213733. The next prime is 22213753. The reversal of 22213752 is 25731222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213753) 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 7 ways as a sum of consecutive naturals, for example, 41808 + ... + 42335.

It is an arithmetic number, because the mean of its divisors is an integer number (1893240).

Almost surely, 2^22213752 is an apocalyptic number.

22213752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22213752 is an abundant number, since it is smaller than the sum of its proper divisors (38369928).

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

22213752 is a wasteful number, since it uses less digits than its factorization.

22213752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84163 (or 84159 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 22213752 is about 4713.1467195495. The cubic root of 22213752 is about 281.1084969174.

Adding to 22213752 its reverse (25731222), we get a palindrome (47944974).

The spelling of 22213752 in words is "twenty-two million, two hundred thirteen thousand, seven hundred fifty-two".