22828261 has 2 divisors, whose sum is σ = 22828262. Its totient is φ = 22828260.

The previous prime is 22828241. The next prime is 22828277. The reversal of 22828261 is 16282822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20520900 + 2307361 = 4530^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 22828261 - 2¹¹ = 22826213 is a prime.

It is a super-2 number, since 2×22828261² = 1042259000568242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22828231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11414130 + 11414131.

It is an arithmetic number, because the mean of its divisors is an integer number (11414131).

Almost surely, 2^22828261 is an apocalyptic number.

It is an amenable number.

22828261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22828261 is an equidigital number, since it uses as much as digits as its factorization.

22828261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 31.

The square root of 22828261 is about 4777.8929456404. The cubic root of 22828261 is about 283.6770986231.

The spelling of 22828261 in words is "twenty-two million, eight hundred twenty-eight thousand, two hundred sixty-one".