32130220 has 48 divisors (see below), whose sum is σ = 69743520. Its totient is φ = 12427776.

The previous prime is 32130209. The next prime is 32130227. The reversal of 32130220 is 2203123.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 32130220.

It is not an unprimeable number, because it can be changed into a prime (32130227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85954 + ... + 86326.

It is an arithmetic number, because the mean of its divisors is an integer number (1452990).

Almost surely, 2^32130220 is an apocalyptic number.

It is an amenable number.

32130220 is an abundant number, since it is smaller than the sum of its proper divisors (37613300).

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

32130220 is a wasteful number, since it uses less digits than its factorization.

32130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 32130220 is about 5668.3524943320. The cubic root of 32130220 is about 317.9102762308.

Adding to 32130220 its reverse (2203123), we get a palindrome (34333343).

The spelling of 32130220 in words is "thirty-two million, one hundred thirty thousand, two hundred twenty".