22115885 has 8 divisors (see below), whose sum is σ = 28951776. Its totient is φ = 16084240.

The previous prime is 22115839. The next prime is 22115887. The reversal of 22115885 is 58851122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22115885 is a prime.

It is a super-2 number, since 2×22115885² = 978224738666450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200999 + ... + 201108.

It is an arithmetic number, because the mean of its divisors is an integer number (3618972).

Almost surely, 2^22115885 is an apocalyptic number.

It is an amenable number.

22115885 is a deficient number, since it is larger than the sum of its proper divisors (6835891).

22115885 is a wasteful number, since it uses less digits than its factorization.

22115885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402123.

The product of its digits is 6400, while the sum is 32.

The square root of 22115885 is about 4702.7529171752. The cubic root of 22115885 is about 280.6950631356.

The spelling of 22115885 in words is "twenty-two million, one hundred fifteen thousand, eight hundred eighty-five".