23033621 has 8 divisors (see below), whose sum is σ = 24857784. Its totient is φ = 21216960.

The previous prime is 23033561. The next prime is 23033629. The reversal of 23033621 is 12633032.

It can be written as a sum of positive squares in 4 ways, for example, as 2002225 + 21031396 = 1415^2 + 4586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23033621 - 2¹⁴ = 23017237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23033593 and 23033602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23033629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5651 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (3107223).

Almost surely, 2^23033621 is an apocalyptic number.

It is an amenable number.

23033621 is a deficient number, since it is larger than the sum of its proper divisors (1824163).

23033621 is a wasteful number, since it uses less digits than its factorization.

23033621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 23033621 is about 4799.3354748340. The cubic root of 23033621 is about 284.5252010297.

Adding to 23033621 its reverse (12633032), we get a palindrome (35666653).

The spelling of 23033621 in words is "twenty-three million, thirty-three thousand, six hundred twenty-one".