22228957 has 2 divisors, whose sum is σ = 22228958. Its totient is φ = 22228956.

The previous prime is 22228951. The next prime is 22228981. The reversal of 22228957 is 75982222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 10797796 = 3381^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 22228957 - 2¹¹ = 22226909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22228951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11114478 + 11114479.

It is an arithmetic number, because the mean of its divisors is an integer number (11114479).

Almost surely, 2^22228957 is an apocalyptic number.

It is an amenable number.

22228957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22228957 is an equidigital number, since it uses as much as digits as its factorization.

22228957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 22228957 is about 4714.7594848518. The cubic root of 22228957 is about 281.1726205564.

The spelling of 22228957 in words is "twenty-two million, two hundred twenty-eight thousand, nine hundred fifty-seven".