23870217 has 32 divisors (see below), whose sum is σ = 38600704. Its totient is φ = 12830400.

The previous prime is 23870191. The next prime is 23870221. The reversal of 23870217 is 71207832.

It is not a de Polignac number, because 23870217 - 2⁶ = 23870153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23870257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23592 + ... + 24582.

It is an arithmetic number, because the mean of its divisors is an integer number (1206272).

Almost surely, 2^23870217 is an apocalyptic number.

It is an amenable number.

23870217 is a deficient number, since it is larger than the sum of its proper divisors (14730487).

23870217 is a wasteful number, since it uses less digits than its factorization.

23870217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 23870217 is about 4885.7156077692. The cubic root of 23870217 is about 287.9290310279.

The spelling of 23870217 in words is "twenty-three million, eight hundred seventy thousand, two hundred seventeen".