100028208 has 120 divisors (see below), whose sum is σ = 305337600. Its totient is φ = 28129920.

The previous prime is 100028207. The next prime is 100028209. The reversal of 100028208 is 802820001.

It is an interprime number because it is at equal distance from previous prime (100028207) and next prime (100028209).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (100028207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166693 + ... + 167291.

It is an arithmetic number, because the mean of its divisors is an integer number (2544480).

Almost surely, 2^100028208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100028208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152668800).

100028208 is an abundant number, since it is smaller than the sum of its proper divisors (205309392).

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

100028208 is a wasteful number, since it uses less digits than its factorization.

100028208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 682 counting only the distinct ones).

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

The square root of 100028208 is about 10001.4103005526. The cubic root of 100028208 is about 464.2025225709.

Adding to 100028208 its reverse (802820001), we get a palindrome (902848209).

The spelling of 100028208 in words is "one hundred million, twenty-eight thousand, two hundred eight".