32240221 has 8 divisors (see below), whose sum is σ = 34767320. Its totient is φ = 29719872.

The previous prime is 32240213. The next prime is 32240233. The reversal of 32240221 is 12204223.

It can be written as a sum of positive squares in 4 ways, for example, as 1836025 + 30404196 = 1355^2 + 5514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32240221 - 2³ = 32240213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32240195 and 32240204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32240251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13075 + ... + 15343.

It is an arithmetic number, because the mean of its divisors is an integer number (4345915).

Almost surely, 2^32240221 is an apocalyptic number.

It is an amenable number.

32240221 is a deficient number, since it is larger than the sum of its proper divisors (2527099).

32240221 is a wasteful number, since it uses less digits than its factorization.

32240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 32240221 is about 5678.0472875805. The cubic root of 32240221 is about 318.2726621275.

Adding to 32240221 its reverse (12204223), we get a palindrome (44444444).

The spelling of 32240221 in words is "thirty-two million, two hundred forty thousand, two hundred twenty-one".