22117398 has 32 divisors (see below), whose sum is σ = 46400256. Its totient is φ = 7015008.

The previous prime is 22117369. The next prime is 22117399. The reversal of 22117398 is 89371122.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22117399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40161 + ... + 40707.

It is an arithmetic number, because the mean of its divisors is an integer number (1450008).

Almost surely, 2^22117398 is an apocalyptic number.

22117398 is an abundant number, since it is smaller than the sum of its proper divisors (24282858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22117398 is a wasteful number, since it uses less digits than its factorization.

22117398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its digits is 6048, while the sum is 33.

The square root of 22117398 is about 4702.9137776489. The cubic root of 22117398 is about 280.7014639940.

The spelling of 22117398 in words is "twenty-two million, one hundred seventeen thousand, three hundred ninety-eight".