23861215 has 16 divisors (see below), whose sum is σ = 32804928. Its totient is φ = 16321536.

The previous prime is 23861213. The next prime is 23861219. The reversal of 23861215 is 51216832.

It is not a de Polignac number, because 23861215 - 2¹ = 23861213 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 (23861213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23049 + ... + 24061.

It is an arithmetic number, because the mean of its divisors is an integer number (2050308).

Almost surely, 2^23861215 is an apocalyptic number.

23861215 is a deficient number, since it is larger than the sum of its proper divisors (8943713).

23861215 is a wasteful number, since it uses less digits than its factorization.

23861215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698.

The product of its digits is 2880, while the sum is 28.

The square root of 23861215 is about 4884.7942638355. The cubic root of 23861215 is about 287.8928316219.

The spelling of 23861215 in words is "twenty-three million, eight hundred sixty-one thousand, two hundred fifteen".