23212332 has 144 divisors (see below), whose sum is σ = 71914752. Its totient is φ = 6454080.

The previous prime is 23212331. The next prime is 23212349. The reversal of 23212332 is 23321232.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (23212331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138913 + ... + 139079.

It is an arithmetic number, because the mean of its divisors is an integer number (499408).

Almost surely, 2^23212332 is an apocalyptic number.

23212332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23212332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35957376).

23212332 is an abundant number, since it is smaller than the sum of its proper divisors (48702420).

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

23212332 is a wasteful number, since it uses less digits than its factorization.

23212332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 196 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 23212332 is about 4817.9178075181. The cubic root of 23212332 is about 285.2591548568.

Adding to 23212332 its reverse (23321232), we get a palindrome (46533564).

Subtracting 23212332 from its reverse (23321232), we obtain a square (108900 = 330²).

The spelling of 23212332 in words is "twenty-three million, two hundred twelve thousand, three hundred thirty-two".