22086540 has 96 divisors (see below), whose sum is σ = 78543360. Its totient is φ = 5047488.

The previous prime is 22086527. The next prime is 22086551. The reversal of 22086540 is 4568022.

22086540 is a `hidden beast` number, since 2 + 2 + 0 + 8 + 654 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (818160).

Almost surely, 2^22086540 is an apocalyptic number.

22086540 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 22086540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39271680).

22086540 is an abundant number, since it is smaller than the sum of its proper divisors (56456820).

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

22086540 is a wasteful number, since it uses less digits than its factorization.

22086540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868 (or 5860 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22086540 is about 4699.6319004790. The cubic root of 22086540 is about 280.5708591608.

The spelling of 22086540 in words is "twenty-two million, eighty-six thousand, five hundred forty".