22223887 has 4 divisors (see below), whose sum is σ = 25398736. Its totient is φ = 19049040.

The previous prime is 22223881. The next prime is 22223899. The reversal of 22223887 is 78832222.

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 22223887 - 2⁷ = 22223759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223881) 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, 1587414 + ... + 1587427.

It is an arithmetic number, because the mean of its divisors is an integer number (6349684).

Almost surely, 2^22223887 is an apocalyptic number.

22223887 is a deficient number, since it is larger than the sum of its proper divisors (3174849).

22223887 is an equidigital number, since it uses as much as digits as its factorization.

22223887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174848.

The product of its digits is 21504, while the sum is 34.

The square root of 22223887 is about 4714.2217809518. The cubic root of 22223887 is about 281.1512422317.

The spelling of 22223887 in words is "twenty-two million, two hundred twenty-three thousand, eight hundred eighty-seven".