104640008 has 32 divisors (see below), whose sum is σ = 216056160. Its totient is φ = 47114880.

The previous prime is 104640007. The next prime is 104640061. The reversal of 104640008 is 800046401.

It is a happy number.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (104640007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860 + ... + 14972.

It is an arithmetic number, because the mean of its divisors is an integer number (6751755).

Almost surely, 2^104640008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 104640008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108028080).

104640008 is an abundant number, since it is smaller than the sum of its proper divisors (111416152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

104640008 is a wasteful number, since it uses less digits than its factorization.

104640008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11237 (or 11233 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 104640008 is about 10229.3698730665. The cubic root of 104640008 is about 471.2296276493.

Adding to 104640008 its reverse (800046401), we get a palindrome (904686409).

The spelling of 104640008 in words is "one hundred four million, six hundred forty thousand, eight".