32223220 has 12 divisors (see below), whose sum is σ = 67668804. Its totient is φ = 12889280.

The previous prime is 32223209. The next prime is 32223227. The reversal of 32223220 is 2232223.

It can be written as a sum of positive squares in 2 ways, for example, as 4639716 + 27583504 = 2154^2 + 5252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32223194 and 32223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32223227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805561 + ... + 805600.

It is an arithmetic number, because the mean of its divisors is an integer number (5639067).

Almost surely, 2^32223220 is an apocalyptic number.

It is an amenable number.

32223220 is an abundant number, since it is smaller than the sum of its proper divisors (35445584).

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

32223220 is a wasteful number, since it uses less digits than its factorization.

32223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611170 (or 1611168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 32223220 is about 5676.5500085880. The cubic root of 32223220 is about 318.2167081592.

Adding to 32223220 its reverse (2232223), we get a palindrome (34455443).

The spelling of 32223220 in words is "thirty-two million, two hundred twenty-three thousand, two hundred twenty".