23626021 has 4 divisors (see below), whose sum is σ = 23860044. Its totient is φ = 23392000.

The previous prime is 23626003. The next prime is 23626027. The reversal of 23626021 is 12062632.

It is a happy number.

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 19236996 + 4389025 = 4386^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 23626021 - 2¹⁵ = 23593253 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23625983 and 23626001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23626027) 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, 116860 + ... + 117061.

It is an arithmetic number, because the mean of its divisors is an integer number (5965011).

Almost surely, 2^23626021 is an apocalyptic number.

It is an amenable number.

23626021 is a deficient number, since it is larger than the sum of its proper divisors (234023).

23626021 is a wasteful number, since it uses less digits than its factorization.

23626021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234022.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23626021 is about 4860.6605518180. The cubic root of 23626021 is about 286.9438109071.

Adding to 23626021 its reverse (12062632), we get a palindrome (35688653).

The spelling of 23626021 in words is "twenty-three million, six hundred twenty-six thousand, twenty-one".