22868887 has 4 divisors (see below), whose sum is σ = 23191056. Its totient is φ = 22546720.

The previous prime is 22868869. The next prime is 22868891. The reversal of 22868887 is 78886822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22868887 - 2¹¹ = 22866839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22868887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22868687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160978 + ... + 161119.

It is an arithmetic number, because the mean of its divisors is an integer number (5797764).

Almost surely, 2^22868887 is an apocalyptic number.

22868887 is a deficient number, since it is larger than the sum of its proper divisors (322169).

22868887 is an equidigital number, since it uses as much as digits as its factorization.

22868887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322168.

The product of its digits is 688128, while the sum is 49.

The square root of 22868887 is about 4782.1425114691. The cubic root of 22868887 is about 283.8452795749.

The spelling of 22868887 in words is "twenty-two million, eight hundred sixty-eight thousand, eight hundred eighty-seven".