22087296 has 256 divisors, whose sum is σ = 82252800. Its totient is φ = 5667840.

The previous prime is 22087259. The next prime is 22087297. The reversal of 22087296 is 69278022.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22087296.

It is not an unprimeable number, because it can be changed into a prime (22087297) 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 31 ways as a sum of consecutive naturals, for example, 266071 + ... + 266153.

It is an arithmetic number, because the mean of its divisors is an integer number (321300).

Almost surely, 2^22087296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22087296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41126400).

22087296 is an abundant number, since it is smaller than the sum of its proper divisors (60165504).

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

22087296 is a wasteful number, since it uses less digits than its factorization.

22087296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 22087296 is about 4699.7123316220. The cubic root of 22087296 is about 280.5740603435.

The spelling of 22087296 in words is "twenty-two million, eighty-seven thousand, two hundred ninety-six".