22830021 has 12 divisors (see below), whose sum is σ = 33066540. Its totient is φ = 15178560.

The previous prime is 22830019. The next prime is 22830079. The reversal of 22830021 is 12003822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14062500 + 8767521 = 3750^2 + 2961^2 .

It is not a de Polignac number, because 22830021 - 2¹ = 22830019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22829976 and 22830003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22830011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (2755545).

Almost surely, 2^22830021 is an apocalyptic number.

It is an amenable number.

22830021 is a deficient number, since it is larger than the sum of its proper divisors (10236519).

22830021 is a wasteful number, since it uses less digits than its factorization.

22830021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6916 (or 6913 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22830021 is about 4778.0771236974. The cubic root of 22830021 is about 283.6843886931.

Adding to 22830021 its reverse (12003822), we get a palindrome (34833843).

The spelling of 22830021 in words is "twenty-two million, eight hundred thirty thousand, twenty-one".