22288247 has 2 divisors, whose sum is σ = 22288248. Its totient is φ = 22288246.

The previous prime is 22288243. The next prime is 22288261. The reversal of 22288247 is 74288222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22288247 - 2² = 22288243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22288243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144123 + 11144124.

It is an arithmetic number, because the mean of its divisors is an integer number (11144124).

Almost surely, 2^22288247 is an apocalyptic number.

22288247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22288247 is an equidigital number, since it uses as much as digits as its factorization.

22288247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28672, while the sum is 35.

The square root of 22288247 is about 4721.0429991687. The cubic root of 22288247 is about 281.4223837366.

The spelling of 22288247 in words is "twenty-two million, two hundred eighty-eight thousand, two hundred forty-seven".