22267998 has 36 divisors (see below), whose sum is σ = 50002368. Its totient is φ = 7161840.

The previous prime is 22267997. The next prime is 22268009. The reversal of 22267998 is 89976222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22267991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14403 + ... + 15873.

Almost surely, 2^22267998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22267998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25001184).

22267998 is an abundant number, since it is smaller than the sum of its proper divisors (27734370).

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

22267998 is a wasteful number, since it uses less digits than its factorization.

22267998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537 (or 1505 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 22267998 is about 4718.8979645676. The cubic root of 22267998 is about 281.3371332990.

The spelling of 22267998 in words is "twenty-two million, two hundred sixty-seven thousand, nine hundred ninety-eight".