22063998 has 32 divisors (see below), whose sum is σ = 48597120. Its totient is φ = 6622560.

The previous prime is 22063991. The next prime is 22063999. The reversal of 22063998 is 89936022.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22063991) 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, 5661 + ... + 8727.

It is an arithmetic number, because the mean of its divisors is an integer number (1518660).

Almost surely, 2^22063998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22063998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24298560).

22063998 is an abundant number, since it is smaller than the sum of its proper divisors (26533122).

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

22063998 is a wasteful number, since it uses less digits than its factorization.

22063998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 22063998 is about 4697.2330152974. The cubic root of 22063998 is about 280.4753744415.

The spelling of 22063998 in words is "twenty-two million, sixty-three thousand, nine hundred ninety-eight".