22872687 has 4 divisors (see below), whose sum is σ = 30496920. Its totient is φ = 15248456.

The previous prime is 22872683. The next prime is 22872709. The reversal of 22872687 is 78627822.

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 22872687 - 2² = 22872683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22872683) 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 3 ways as a sum of consecutive naturals, for example, 3812112 + ... + 3812117.

It is an arithmetic number, because the mean of its divisors is an integer number (7624230).

Almost surely, 2^22872687 is an apocalyptic number.

22872687 is a deficient number, since it is larger than the sum of its proper divisors (7624233).

22872687 is an equidigital number, since it uses as much as digits as its factorization.

22872687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624232.

The product of its digits is 150528, while the sum is 42.

The square root of 22872687 is about 4782.5398064209. The cubic root of 22872687 is about 283.8610003855.

The spelling of 22872687 in words is "twenty-two million, eight hundred seventy-two thousand, six hundred eighty-seven".