32722321 has 4 divisors (see below), whose sum is σ = 32734692. Its totient is φ = 32709952.

The previous prime is 32722309. The next prime is 32722343. The reversal of 32722321 is 12322723.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12322723 = 7 ⋅1760389.

It can be written as a sum of positive squares in 2 ways, for example, as 18584721 + 14137600 = 4311^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 32722321 - 2⁵ = 32722289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32722292 and 32722301.

It is not an unprimeable number, because it can be changed into a prime (32725321) 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, 436 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (8183673).

Almost surely, 2^32722321 is an apocalyptic number.

It is an amenable number.

32722321 is a deficient number, since it is larger than the sum of its proper divisors (12371).

32722321 is an equidigital number, since it uses as much as digits as its factorization.

32722321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370.

The product of its digits is 1008, while the sum is 22.

The square root of 32722321 is about 5720.3427344872. The cubic root of 32722321 is about 319.8512361909.

The spelling of 32722321 in words is "thirty-two million, seven hundred twenty-two thousand, three hundred twenty-one".