22873021 has 4 divisors (see below), whose sum is σ = 22896700. Its totient is φ = 22849344.

The previous prime is 22873013. The next prime is 22873031. The reversal of 22873021 is 12037822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16040025 + 6832996 = 4005^2 + 2614^2 .

It is a cyclic number.

It is not a de Polignac number, because 22873021 - 2³ = 22873013 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 (22873031) 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, 10326 + ... + 12343.

It is an arithmetic number, because the mean of its divisors is an integer number (5724175).

Almost surely, 2^22873021 is an apocalyptic number.

It is an amenable number.

22873021 is a deficient number, since it is larger than the sum of its proper divisors (23679).

22873021 is a wasteful number, since it uses less digits than its factorization.

22873021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23678.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22873021 is about 4782.5747249782. The cubic root of 22873021 is about 283.8623820788.

The spelling of 22873021 in words is "twenty-two million, eight hundred seventy-three thousand, twenty-one".