28998107 has 8 divisors (see below), whose sum is σ = 31358016. Its totient is φ = 26710912.

The previous prime is 28998097. The next prime is 28998127. The reversal of 28998107 is 70189982.

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

It is a cyclic number.

It is not a de Polignac number, because 28998107 - 2⁴ = 28998091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28998127) 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 7 ways as a sum of consecutive naturals, for example, 17348 + ... + 18945.

It is an arithmetic number, because the mean of its divisors is an integer number (3919752).

Almost surely, 2^28998107 is an apocalyptic number.

28998107 is a deficient number, since it is larger than the sum of its proper divisors (2359909).

28998107 is a wasteful number, since it uses less digits than its factorization.

28998107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36357.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 28998107 is about 5384.9890436286. The cubic root of 28998107 is about 307.2249974855.

The spelling of 28998107 in words is "twenty-eight million, nine hundred ninety-eight thousand, one hundred seven".