28922233 has 2 divisors, whose sum is σ = 28922234. Its totient is φ = 28922232.

The previous prime is 28922209. The next prime is 28922269. The reversal of 28922233 is 33222982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16867449 + 12054784 = 4107^2 + 3472^2 .

It is a cyclic number.

It is not a de Polignac number, because 28922233 - 2²¹ = 26825081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28922195 and 28922204.

It is not a weakly prime, because it can be changed into another prime (28922203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461116 + 14461117.

It is an arithmetic number, because the mean of its divisors is an integer number (14461117).

Almost surely, 2^28922233 is an apocalyptic number.

It is an amenable number.

28922233 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922233 is an equidigital number, since it uses as much as digits as its factorization.

28922233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 28922233 is about 5377.9394753009. The cubic root of 28922233 is about 306.9568104422.

It can be divided in two parts, 289 and 22233, that added together give a palindrome (22522).

The spelling of 28922233 in words is "twenty-eight million, nine hundred twenty-two thousand, two hundred thirty-three".