100028875 has 8 divisors (see below), whose sum is σ = 124836192. Its totient is φ = 80023000.

The previous prime is 100028839. The next prime is 100028899. The reversal of 100028875 is 578820001.

100028875 = 318² + 319² + ... + 692².

It is a de Polignac number, because none of the positive numbers 2^k-100028875 is a prime.

It is a Duffinian number.

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, 399991 + ... + 400240.

It is an arithmetic number, because the mean of its divisors is an integer number (15604524).

Almost surely, 2^100028875 is an apocalyptic number.

100028875 is a deficient number, since it is larger than the sum of its proper divisors (24807317).

100028875 is an frugal number, since it uses more digits than its factorization.

100028875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800246 (or 800236 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 100028875 is about 10001.4436457943. The cubic root of 100028875 is about 464.2035543545.

Adding to 100028875 its reverse (578820001), we get a palindrome (678848876).

The spelling of 100028875 in words is "one hundred million, twenty-eight thousand, eight hundred seventy-five".