28222933 has 2 divisors, whose sum is σ = 28222934. Its totient is φ = 28222932.

The previous prime is 28222903. The next prime is 28222937. The reversal of 28222933 is 33922282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28121809 + 101124 = 5303^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 28222933 - 2¹³ = 28214741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28222895 and 28222904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28222937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14111466 + 14111467.

It is an arithmetic number, because the mean of its divisors is an integer number (14111467).

Almost surely, 2^28222933 is an apocalyptic number.

It is an amenable number.

28222933 is a deficient number, since it is larger than the sum of its proper divisors (1).

28222933 is an equidigital number, since it uses as much as digits as its factorization.

28222933 is an odious number, because the sum of its binary digits is odd.

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

The square root of 28222933 is about 5312.5260469950. The cubic root of 28222933 is about 304.4626676370.

The spelling of 28222933 in words is "twenty-eight million, two hundred twenty-two thousand, nine hundred thirty-three".