100820106 has 16 divisors (see below), whose sum is σ = 224044800. Its totient is φ = 33606684.

The previous prime is 100820053. The next prime is 100820143. The reversal of 100820106 is 601028001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933466 + ... + 933573.

It is an arithmetic number, because the mean of its divisors is an integer number (14002800).

Almost surely, 2^100820106 is an apocalyptic number.

100820106 is an abundant number, since it is smaller than the sum of its proper divisors (123224694).

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

100820106 is a wasteful number, since it uses less digits than its factorization.

100820106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867050 (or 1867044 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 100820106 is about 10040.9215712503. The cubic root of 100820106 is about 465.4242953507.

Adding to 100820106 its reverse (601028001), we get a palindrome (701848107).

The spelling of 100820106 in words is "one hundred million, eight hundred twenty thousand, one hundred six".