32228281 has 2 divisors, whose sum is σ = 32228282. Its totient is φ = 32228280.

The previous prime is 32228279. The next prime is 32228333. The reversal of 32228281 is 18282223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18352656 + 13875625 = 4284^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 32228281 - 2¹ = 32228279 is a prime.

It is a super-2 number, since 2×32228281² = 2077324192429922, which contains 22 as substring.

Together with 32228279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32228201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16114140 + 16114141.

It is an arithmetic number, because the mean of its divisors is an integer number (16114141).

Almost surely, 2^32228281 is an apocalyptic number.

It is an amenable number.

32228281 is a deficient number, since it is larger than the sum of its proper divisors (1).

32228281 is an equidigital number, since it uses as much as digits as its factorization.

32228281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 28.

The square root of 32228281 is about 5676.9957724134. The cubic root of 32228281 is about 318.2333670618.

The spelling of 32228281 in words is "thirty-two million, two hundred twenty-eight thousand, two hundred eighty-one".