100020108 has 24 divisors (see below), whose sum is σ = 233542512. Its totient is φ = 33316864.

The previous prime is 100020103. The next prime is 100020113. The reversal of 100020108 is 801020001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100020103) and next prime (100020113).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100020093 and 100020102.

It is not an unprimeable number, because it can be changed into a prime (100020103) 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, 30316 + ... + 33452.

It is an arithmetic number, because the mean of its divisors is an integer number (9730938).

Almost surely, 2^100020108 is an apocalyptic number.

It is an amenable number.

100020108 is an abundant number, since it is smaller than the sum of its proper divisors (133522404).

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

100020108 is a wasteful number, since it uses less digits than its factorization.

100020108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801 (or 5799 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 100020108 is about 10001.0053494636. The cubic root of 100020108 is about 464.1899922990.

Adding to 100020108 its reverse (801020001), we get a palindrome (901040109).

It can be divided in two parts, 100020 and 108, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 100020108 in words is "one hundred million, twenty thousand, one hundred eight".