23808217 has 16 divisors (see below), whose sum is σ = 25850880. Its totient is φ = 21873600.

The previous prime is 23808209. The next prime is 23808221. The reversal of 23808217 is 71280832.

It is not a de Polignac number, because 23808217 - 2³ = 23808209 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23808277) 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, 63643 + ... + 64015.

It is an arithmetic number, because the mean of its divisors is an integer number (1615680).

Almost surely, 2^23808217 is an apocalyptic number.

It is an amenable number.

23808217 is a deficient number, since it is larger than the sum of its proper divisors (2042663).

23808217 is a wasteful number, since it uses less digits than its factorization.

23808217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 23808217 is about 4879.3664547767. The cubic root of 23808217 is about 287.6795279469.

It can be divided in two parts, 23808 and 217, that added together give a square (24025 = 155²).

The spelling of 23808217 in words is "twenty-three million, eight hundred eight thousand, two hundred seventeen".