28928298 has 32 divisors (see below), whose sum is σ = 69603840. Its totient is φ = 7830000.

The previous prime is 28928269. The next prime is 28928309. The reversal of 28928298 is 89282982.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17328 + ... + 18923.

It is an arithmetic number, because the mean of its divisors is an integer number (2175120).

Almost surely, 2^28928298 is an apocalyptic number.

28928298 is an abundant number, since it is smaller than the sum of its proper divisors (40675542).

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

28928298 is a wasteful number, since it uses less digits than its factorization.

28928298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36282.

The product of its digits is 331776, while the sum is 48.

The square root of 28928298 is about 5378.5033234163. The cubic root of 28928298 is about 306.9782652510.

The spelling of 28928298 in words is "twenty-eight million, nine hundred twenty-eight thousand, two hundred ninety-eight".