22290448 has 20 divisors (see below), whose sum is σ = 43507260. Its totient is φ = 11062784.

The previous prime is 22290419. The next prime is 22290449. The reversal of 22290448 is 84409222.

It can be written as a sum of positive squares in 2 ways, for example, as 17572864 + 4717584 = 4192^2 + 2172^2 .

It is not an unprimeable number, because it can be changed into a prime (22290449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2893 + ... + 7276.

It is an arithmetic number, because the mean of its divisors is an integer number (2175363).

Almost surely, 2^22290448 is an apocalyptic number.

It is an amenable number.

22290448 is a deficient number, since it is larger than the sum of its proper divisors (21216812).

22290448 is a wasteful number, since it uses less digits than its factorization.

22290448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10314 (or 10308 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 22290448 is about 4721.2760986835. The cubic root of 22290448 is about 281.4316470684.

The spelling of 22290448 in words is "twenty-two million, two hundred ninety thousand, four hundred forty-eight".