22097520 has 120 divisors (see below), whose sum is σ = 75905856. Its totient is φ = 5758464.

The previous prime is 22097519. The next prime is 22097521. The reversal of 22097520 is 2579022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22097519) and next prime (22097521).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22097521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33514 + ... + 34166.

Almost surely, 2^22097520 is an apocalyptic number.

22097520 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 22097520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37952928).

22097520 is an abundant number, since it is smaller than the sum of its proper divisors (53808336).

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

22097520 is a wasteful number, since it uses less digits than its factorization.

22097520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 22097520 is about 4700.7999319265. The cubic root of 22097520 is about 280.6173453566.

The spelling of 22097520 in words is "twenty-two million, ninety-seven thousand, five hundred twenty".