28272998 has 8 divisors (see below), whose sum is σ = 45671808. Its totient is φ = 13049064.

The previous prime is 28272997. The next prime is 28273001. The reversal of 28272998 is 89927282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28272997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543686 + ... + 543737.

It is an arithmetic number, because the mean of its divisors is an integer number (5708976).

Almost surely, 2^28272998 is an apocalyptic number.

28272998 is a deficient number, since it is larger than the sum of its proper divisors (17398810).

28272998 is a wasteful number, since it uses less digits than its factorization.

28272998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087438.

The product of its digits is 290304, while the sum is 47.

The square root of 28272998 is about 5317.2359360856. The cubic root of 28272998 is about 304.6425912842.

The spelling of 28272998 in words is "twenty-eight million, two hundred seventy-two thousand, nine hundred ninety-eight".