23907621 has 8 divisors (see below), whose sum is σ = 31899744. Its totient is φ = 15926960.

The previous prime is 23907619. The next prime is 23907641. The reversal of 23907621 is 12670932.

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 23907621 - 2¹ = 23907619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23907641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5470 + ... + 8816.

It is an arithmetic number, because the mean of its divisors is an integer number (3987468).

Almost surely, 2^23907621 is an apocalyptic number.

It is an amenable number.

23907621 is a deficient number, since it is larger than the sum of its proper divisors (7992123).

23907621 is a wasteful number, since it uses less digits than its factorization.

23907621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5731.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 23907621 is about 4889.5420030919. The cubic root of 23907621 is about 288.0793449399.

It can be divided in two parts, 2390 and 7621, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 23907621 in words is "twenty-three million, nine hundred seven thousand, six hundred twenty-one".