32213216 has 48 divisors (see below), whose sum is σ = 74833920. Its totient is φ = 13357440.

The previous prime is 32213191. The next prime is 32213219. The reversal of 32213216 is 61231223.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32213219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4625 + ... + 9263.

It is an arithmetic number, because the mean of its divisors is an integer number (1559040).

Almost surely, 2^32213216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32213216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37416960).

32213216 is an abundant number, since it is smaller than the sum of its proper divisors (42620704).

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

32213216 is a wasteful number, since it uses less digits than its factorization.

32213216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687 (or 4679 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 32213216 is about 5675.6687711670. The cubic root of 32213216 is about 318.1837736330.

Adding to 32213216 its reverse (61231223), we get a palindrome (93444439).

The spelling of 32213216 in words is "thirty-two million, two hundred thirteen thousand, two hundred sixteen".