22516120 has 64 divisors (see below), whose sum is σ = 56103840. Its totient is φ = 8064000.

The previous prime is 22516099. The next prime is 22516127. The reversal of 22516120 is 2161522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22516127) 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, 31770 + ... + 32470.

Almost surely, 2^22516120 is an apocalyptic number.

22516120 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 22516120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28051920).

22516120 is an abundant number, since it is smaller than the sum of its proper divisors (33587720).

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

22516120 is a wasteful number, since it uses less digits than its factorization.

22516120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 22516120 is about 4745.1153832125. The cubic root of 22516120 is about 282.3782125733.

Adding to 22516120 its reverse (2161522), we get a palindrome (24677642).

The spelling of 22516120 in words is "twenty-two million, five hundred sixteen thousand, one hundred twenty".