22698 has 24 divisors (see below), whose sum is σ = 53508. Its totient is φ = 6912.
The previous prime is 22697. The next prime is 22699. The reversal of 22698 is 89622.
It is an interprime number because it is at equal distance from previous prime (22697) and next prime (22699).
It can be written as a sum of positive squares in 2 ways, for example, as 21609 + 1089 = 147^2 + 33^2 .
It is a plaindrome in base 16.
It is a nialpdrome in base 13.
It is not an unprimeable number, because it can be changed into a prime (22691) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186 + ... + 282.
222698 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 22698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26754).
22698 is an abundant number, since it is smaller than the sum of its proper divisors (30810).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22698 is a wasteful number, since it uses less digits than its factorization.
22698 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 118 (or 115 counting only the distinct ones).
The product of its digits is 1728, while the sum is 27.
The square root of 22698 is about 150.6585543539. The cubic root of 22698 is about 28.3136503049.
It can be divided in two parts, 226 and 98, that added together give a square (324 = 182).
The spelling of 22698 in words is "twenty-two thousand, six hundred ninety-eight".
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