23068021 has 4 divisors (see below), whose sum is σ = 23863500. Its totient is φ = 22272544.

The previous prime is 23068013. The next prime is 23068027. The reversal of 23068021 is 12086032.

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 15444900 + 7623121 = 3930^2 + 2761^2 .

It is a cyclic number.

It is not a de Polignac number, because 23068021 - 2³ = 23068013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23067983 and 23068001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23068027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397696 + ... + 397753.

It is an arithmetic number, because the mean of its divisors is an integer number (5965875).

Almost surely, 2^23068021 is an apocalyptic number.

It is an amenable number.

23068021 is a deficient number, since it is larger than the sum of its proper divisors (795479).

23068021 is an equidigital number, since it uses as much as digits as its factorization.

23068021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795478.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 23068021 is about 4802.9179672362. The cubic root of 23068021 is about 284.6667737685. Note that the first 3 decimals are identical.

The spelling of 23068021 in words is "twenty-three million, sixty-eight thousand, twenty-one".