23948021 has 2 divisors, whose sum is σ = 23948022. Its totient is φ = 23948020.

The previous prime is 23948017. The next prime is 23948069. The reversal of 23948021 is 12084932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23571025 + 376996 = 4855^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 23948021 - 2² = 23948017 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23948081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11974010 + 11974011.

It is an arithmetic number, because the mean of its divisors is an integer number (11974011).

Almost surely, 2^23948021 is an apocalyptic number.

It is an amenable number.

23948021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23948021 is an equidigital number, since it uses as much as digits as its factorization.

23948021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 23948021 is about 4893.6715255522. The cubic root of 23948021 is about 288.2415227382.

The spelling of 23948021 in words is "twenty-three million, nine hundred forty-eight thousand, twenty-one".