23885221 has 16 divisors (see below), whose sum is σ = 26569728. Its totient is φ = 21369600.

The previous prime is 23885207. The next prime is 23885227. The reversal of 23885221 is 12258832.

It is a cyclic number.

It is not a de Polignac number, because 23885221 - 2⁵ = 23885189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23885227) 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, 31776 + ... + 32518.

It is an arithmetic number, because the mean of its divisors is an integer number (1660608).

Almost surely, 2^23885221 is an apocalyptic number.

It is an amenable number.

23885221 is a deficient number, since it is larger than the sum of its proper divisors (2684507).

23885221 is a wasteful number, since it uses less digits than its factorization.

23885221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852.

The product of its digits is 7680, while the sum is 31.

The square root of 23885221 is about 4887.2508632154. The cubic root of 23885221 is about 287.9893458314.

The spelling of 23885221 in words is "twenty-three million, eight hundred eighty-five thousand, two hundred twenty-one".