32220220 has 24 divisors (see below), whose sum is σ = 67891824. Its totient is φ = 12844416.

The previous prime is 32220187. The next prime is 32220241. The reversal of 32220220 is 2202223.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 32220220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3687 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (2828826).

Almost surely, 2^32220220 is an apocalyptic number.

It is an amenable number.

32220220 is an abundant number, since it is smaller than the sum of its proper divisors (35671604).

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

32220220 is a wasteful number, since it uses less digits than its factorization.

32220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 32220220 is about 5676.2857574298. The cubic root of 32220220 is about 318.2068324676.

Adding to 32220220 its reverse (2202223), we get a palindrome (34422443).

The spelling of 32220220 in words is "thirty-two million, two hundred twenty thousand, two hundred twenty".