100840080 has 80 divisors (see below), whose sum is σ = 341031744. Its totient is φ = 24445440.

The previous prime is 100840067. The next prime is 100840097. The reversal of 100840080 is 80048001.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16459 + ... + 21738.

Almost surely, 2^100840080 is an apocalyptic number.

100840080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100840080 is an abundant number, since it is smaller than the sum of its proper divisors (240191664).

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

100840080 is a wasteful number, since it uses less digits than its factorization.

100840080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38224 (or 38218 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 100840080 is about 10041.9161518109. The cubic root of 100840080 is about 465.4550292039.

Adding to 100840080 its reverse (80048001), we get a palindrome (180888081).

The spelling of 100840080 in words is "one hundred million, eight hundred forty thousand, eighty".