22027287 has 8 divisors (see below), whose sum is σ = 29723904. Its totient is φ = 14507768.

The previous prime is 22027279. The next prime is 22027297. The reversal of 22027287 is 78272022.

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

It is a cyclic number.

It is not a de Polignac number, because 22027287 - 2³ = 22027279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22027207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43983 + ... + 44480.

It is an arithmetic number, because the mean of its divisors is an integer number (3715488).

Almost surely, 2^22027287 is an apocalyptic number.

22027287 is a deficient number, since it is larger than the sum of its proper divisors (7696617).

22027287 is an equidigital number, since it uses as much as digits as its factorization.

22027287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88549.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 22027287 is about 4693.3236623953. The cubic root of 22027287 is about 280.3197325469.

The spelling of 22027287 in words is "twenty-two million, twenty-seven thousand, two hundred eighty-seven".