22087086 has 64 divisors (see below), whose sum is σ = 52641792. Its totient is φ = 6047712.

The previous prime is 22087073. The next prime is 22087103. The reversal of 22087086 is 68078022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 132175 + ... + 132341.

It is an arithmetic number, because the mean of its divisors is an integer number (822528).

Almost surely, 2^22087086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22087086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26320896).

22087086 is an abundant number, since it is smaller than the sum of its proper divisors (30554706).

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

22087086 is a wasteful number, since it uses less digits than its factorization.

22087086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 22087086 is about 4699.6899897759. The cubic root of 22087086 is about 280.5731711334.

The spelling of 22087086 in words is "twenty-two million, eighty-seven thousand, eighty-six".