23748021 has 12 divisors (see below), whose sum is σ = 37421280. Its totient is φ = 14392680.

The previous prime is 23747993. The next prime is 23748037. The reversal of 23748021 is 12084732.

It is not a de Polignac number, because 23748021 - 2⁶ = 23747957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23748091) 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, 119841 + ... + 120038.

It is an arithmetic number, because the mean of its divisors is an integer number (3118440).

Almost surely, 2^23748021 is an apocalyptic number.

It is an amenable number.

23748021 is a deficient number, since it is larger than the sum of its proper divisors (13673259).

23748021 is a wasteful number, since it uses less digits than its factorization.

23748021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239896 (or 239893 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 23748021 is about 4873.1941270588. The cubic root of 23748021 is about 287.4368698186.

The spelling of 23748021 in words is "twenty-three million, seven hundred forty-eight thousand, twenty-one".