32145220 has 12 divisors (see below), whose sum is σ = 67505004. Its totient is φ = 12858080.

The previous prime is 32145199. The next prime is 32145229. The reversal of 32145220 is 2254123.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 15888196 = 4032^2 + 3986^2 .

It is not an unprimeable number, because it can be changed into a prime (32145229) 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, 803611 + ... + 803650.

It is an arithmetic number, because the mean of its divisors is an integer number (5625417).

Almost surely, 2^32145220 is an apocalyptic number.

It is an amenable number.

32145220 is an abundant number, since it is smaller than the sum of its proper divisors (35359784).

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

32145220 is a wasteful number, since it uses less digits than its factorization.

32145220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607270 (or 1607268 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 32145220 is about 5669.6754757217. The cubic root of 32145220 is about 317.9597406940.

Adding to 32145220 its reverse (2254123), we get a palindrome (34399343).

The spelling of 32145220 in words is "thirty-two million, one hundred forty-five thousand, two hundred twenty".