30028875 has 16 divisors (see below), whose sum is σ = 49968672. Its totient is φ = 16015200.

The previous prime is 30028871. The next prime is 30028903. The reversal of 30028875 is 57882003.

It is not a de Polignac number, because 30028875 - 2² = 30028871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30028871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39664 + ... + 40413.

It is an arithmetic number, because the mean of its divisors is an integer number (3123042).

Almost surely, 2^30028875 is an apocalyptic number.

30028875 is a deficient number, since it is larger than the sum of its proper divisors (19939797).

30028875 is an equidigital number, since it uses as much as digits as its factorization.

30028875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80095 (or 80085 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 30028875 is about 5479.8608558977. The cubic root of 30028875 is about 310.8229090047.

It can be divided in two parts, 30028 and 875, that added together give a palindrome (30903).

The spelling of 30028875 in words is "thirty million, twenty-eight thousand, eight hundred seventy-five".