22248909 has 24 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 14501760.

The previous prime is 22248901. The next prime is 22248911. The reversal of 22248909 is 90984222.

It is not a de Polignac number, because 22248909 - 2³ = 22248901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22248901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133144 + ... + 133310.

It is an arithmetic number, because the mean of its divisors is an integer number (1369368).

Almost surely, 2^22248909 is an apocalyptic number.

It is an amenable number.

22248909 is a deficient number, since it is larger than the sum of its proper divisors (10615923).

22248909 is a wasteful number, since it uses less digits than its factorization.

22248909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22248909 is about 4716.8749188419. The cubic root of 22248909 is about 281.2567192469.

The spelling of 22248909 in words is "twenty-two million, two hundred forty-eight thousand, nine hundred nine".