22821873 has 4 divisors (see below), whose sum is σ = 30429168. Its totient is φ = 15214580.

The previous prime is 22821847. The next prime is 22821901. The reversal of 22821873 is 37812822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22821873 - 2⁶ = 22821809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22821373) 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, 3803643 + ... + 3803648.

It is an arithmetic number, because the mean of its divisors is an integer number (7607292).

Almost surely, 2^22821873 is an apocalyptic number.

It is an amenable number.

22821873 is a deficient number, since it is larger than the sum of its proper divisors (7607295).

22821873 is an equidigital number, since it uses as much as digits as its factorization.

22821873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7607294.

The product of its digits is 10752, while the sum is 33.

The square root of 22821873 is about 4777.2244033539. The cubic root of 22821873 is about 283.6506358341.

The spelling of 22821873 in words is "twenty-two million, eight hundred twenty-one thousand, eight hundred seventy-three".