100820008 has 32 divisors (see below), whose sum is σ = 198268200. Its totient is φ = 47996928.

The previous prime is 100820003. The next prime is 100820009. The reversal of 100820008 is 800028001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59629284 + 41190724 = 7722^2 + 6418^2 .

It is not an unprimeable number, because it can be changed into a prime (100820003) 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, 13960 + ... + 19912.

Almost surely, 2^100820008 is an apocalyptic number.

It is an amenable number.

100820008 is a deficient number, since it is larger than the sum of its proper divisors (97448192).

100820008 is a wasteful number, since it uses less digits than its factorization.

100820008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061 (or 6057 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 100820008 is about 10040.9166912190. The cubic root of 100820008 is about 465.4241445487.

Adding to 100820008 its reverse (800028001), we get a palindrome (900848009).

The spelling of 100820008 in words is "one hundred million, eight hundred twenty thousand, eight".