22687233 has 16 divisors (see below), whose sum is σ = 31159296. Its totient is φ = 14676480.

The previous prime is 22687219. The next prime is 22687237. The reversal of 22687233 is 33278622.

It is not a de Polignac number, because 22687233 - 2⁵ = 22687201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22687194 and 22687203.

It is not an unprimeable number, because it can be changed into a prime (22687237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14688 + ... + 16158.

It is an arithmetic number, because the mean of its divisors is an integer number (1947456).

Almost surely, 2^22687233 is an apocalyptic number.

It is an amenable number.

22687233 is a deficient number, since it is larger than the sum of its proper divisors (8472063).

22687233 is a wasteful number, since it uses less digits than its factorization.

22687233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its digits is 24192, while the sum is 33.

The square root of 22687233 is about 4763.1116930007. Note that the first 3 decimals coincide. The cubic root of 22687233 is about 283.0917265207.

The spelling of 22687233 in words is "twenty-two million, six hundred eighty-seven thousand, two hundred thirty-three".