22098240 has 84 divisors (see below), whose sum is σ = 76018644. Its totient is φ = 5892096.

The previous prime is 22098233. The next prime is 22098277. The reversal of 22098240 is 4289022.

It can be written as a sum of positive squares in 2 ways, for example, as 10969344 + 11128896 = 3312^2 + 3336^2 .

It is a super-2 number, since 2×22098240² = 976664422195200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957 + ... + 6716.

Almost surely, 2^22098240 is an apocalyptic number.

22098240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22098240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38009322).

22098240 is an abundant number, since it is smaller than the sum of its proper divisors (53920404).

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

22098240 is a wasteful number, since it uses less digits than its factorization.

22098240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696 (or 7683 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22098240 is about 4700.8765140131. The cubic root of 22098240 is about 280.6203930937.

The spelling of 22098240 in words is "twenty-two million, ninety-eight thousand, two hundred forty".