100005000 has 160 divisors (see below), whose sum is σ = 320522400. Its totient is φ = 25984000.

The previous prime is 100004981. The next prime is 100005001. The reversal of 100005000 is 500001.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 100005000.

It is not an unprimeable number, because it can be changed into a prime (100005001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 884944 + ... + 885056.

It is an arithmetic number, because the mean of its divisors is an integer number (2003265).

Almost surely, 2^100005000 is an apocalyptic number.

100005000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160261200).

100005000 is an abundant number, since it is smaller than the sum of its proper divisors (220517400).

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

100005000 is a wasteful number, since it uses less digits than its factorization.

100005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 6.

The square root of 100005000 is about 10000.2499968751. The cubic root of 100005000 is about 464.1666192137.

Adding to 100005000 its reverse (500001), we get a palindrome (100505001).

The spelling of 100005000 in words is "one hundred million, five thousand".