22488289 has 2 divisors, whose sum is σ = 22488290. Its totient is φ = 22488288.

The previous prime is 22488281. The next prime is 22488293. The reversal of 22488289 is 98288422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16646400 + 5841889 = 4080^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 22488289 - 2³ = 22488281 is a prime.

It is not a weakly prime, because it can be changed into another prime (22488281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11244144 + 11244145.

It is an arithmetic number, because the mean of its divisors is an integer number (11244145).

Almost surely, 2^22488289 is an apocalyptic number.

It is an amenable number.

22488289 is a deficient number, since it is larger than the sum of its proper divisors (1).

22488289 is an equidigital number, since it uses as much as digits as its factorization.

22488289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 43.

The square root of 22488289 is about 4742.1818817924. The cubic root of 22488289 is about 282.2618202843.

The spelling of 22488289 in words is "twenty-two million, four hundred eighty-eight thousand, two hundred eighty-nine".