23040621 has 12 divisors (see below), whose sum is σ = 33845760. Its totient is φ = 15099720.

The previous prime is 23040613. The next prime is 23040623. The reversal of 23040621 is 12604032.

It is a happy number.

23040621 is a `hidden beast` number, since 2 + 3 + 0 + 40 + 621 = 666.

It is not a de Polignac number, because 23040621 - 2³ = 23040613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23040594 and 23040603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040623) 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, 21165 + ... + 22226.

It is an arithmetic number, because the mean of its divisors is an integer number (2820480).

Almost surely, 2^23040621 is an apocalyptic number.

It is an amenable number.

23040621 is a deficient number, since it is larger than the sum of its proper divisors (10805139).

23040621 is a wasteful number, since it uses less digits than its factorization.

23040621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43456 (or 43453 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23040621 is about 4800.0646870641. The cubic root of 23040621 is about 284.5540208533.

Adding to 23040621 its reverse (12604032), we get a palindrome (35644653).

The spelling of 23040621 in words is "twenty-three million, forty thousand, six hundred twenty-one".