23862221 has 2 divisors, whose sum is σ = 23862222. Its totient is φ = 23862220.

The previous prime is 23862217. The next prime is 23862227. The reversal of 23862221 is 12226832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 6180196 = 4205^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 23862221 - 2² = 23862217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23862227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11931110 + 11931111.

It is an arithmetic number, because the mean of its divisors is an integer number (11931111).

Almost surely, 2^23862221 is an apocalyptic number.

It is an amenable number.

23862221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23862221 is an equidigital number, since it uses as much as digits as its factorization.

23862221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 23862221 is about 4884.8972353572. The cubic root of 23862221 is about 287.8968774639.

The spelling of 23862221 in words is "twenty-three million, eight hundred sixty-two thousand, two hundred twenty-one".