22873287 has 4 divisors (see below), whose sum is σ = 30497720. Its totient is φ = 15248856.

The previous prime is 22873273. The next prime is 22873327. The reversal of 22873287 is 78237822.

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

It is not a de Polignac number, because 22873287 - 2⁷ = 22873159 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 (22873087) 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, 3812212 + ... + 3812217.

It is an arithmetic number, because the mean of its divisors is an integer number (7624430).

Almost surely, 2^22873287 is an apocalyptic number.

22873287 is a deficient number, since it is larger than the sum of its proper divisors (7624433).

22873287 is an equidigital number, since it uses as much as digits as its factorization.

22873287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624432.

The product of its digits is 75264, while the sum is 39.

The square root of 22873287 is about 4782.6025341858. The cubic root of 22873287 is about 283.8634824596.

The spelling of 22873287 in words is "twenty-two million, eight hundred seventy-three thousand, two hundred eighty-seven".