28175098 has 12 divisors (see below), whose sum is σ = 49162842. Its totient is φ = 12075000.

The previous prime is 28175089. The next prime is 28175099. The reversal of 28175098 is 89057182.

It can be written as a sum of positive squares in only one way, i.e., 26904969 + 1270129 = 5187^2 + 1127^2 .

It is a super-2 number, since 2×28175098² = 1587672294619208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28175098.

It is not an unprimeable number, because it can be changed into a prime (28175099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143653 + ... + 143848.

Almost surely, 2^28175098 is an apocalyptic number.

28175098 is a deficient number, since it is larger than the sum of its proper divisors (20987744).

28175098 is a wasteful number, since it uses less digits than its factorization.

28175098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287517 (or 287510 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 28175098 is about 5308.0220421547. The cubic root of 28175098 is about 304.2905592832.

The spelling of 28175098 in words is "twenty-eight million, one hundred seventy-five thousand, ninety-eight".