23861493 has 16 divisors (see below), whose sum is σ = 35536000. Its totient is φ = 15824160.

The previous prime is 23861483. The next prime is 23861507. The reversal of 23861493 is 39416832.

23861493 is a `hidden beast` number, since 2 + 38 + 614 + 9 + 3 = 666.

It is not a de Polignac number, because 23861493 - 2⁹ = 23860981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23861423) 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 15 ways as a sum of consecutive naturals, for example, 3153 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (2221000).

Almost surely, 2^23861493 is an apocalyptic number.

It is an amenable number.

23861493 is a deficient number, since it is larger than the sum of its proper divisors (11674507).

23861493 is a wasteful number, since it uses less digits than its factorization.

23861493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649 (or 4643 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 23861493 is about 4884.8227194034. The cubic root of 23861493 is about 287.8939496691.

The spelling of 23861493 in words is "twenty-three million, eight hundred sixty-one thousand, four hundred ninety-three".