22602240 has 200 divisors, whose sum is σ = 81696780. Its totient is φ = 5971968.

The previous prime is 22602233. The next prime is 22602241. The reversal of 22602240 is 4220622.

It is a happy number.

22602240 is a `hidden beast` number, since 22 + 602 + 2 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22581504 + 20736 = 4752^2 + 144^2 .

It is a super-2 number, since 2×22602240² = 1021722506035200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22602241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 207306 + ... + 207414.

Almost surely, 2^22602240 is an apocalyptic number.

22602240 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 22602240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40848390).

22602240 is an abundant number, since it is smaller than the sum of its proper divisors (59094540).

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

22602240 is an equidigital number, since it uses as much as digits as its factorization.

22602240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22602240 is about 4754.1813175351. The cubic root of 22602240 is about 282.7377693842.

Adding to 22602240 its reverse (4220622), we get a palindrome (26822862).

The spelling of 22602240 in words is "twenty-two million, six hundred two thousand, two hundred forty".