28898113 has 8 divisors (see below), whose sum is σ = 30645000. Its totient is φ = 27156480.

The previous prime is 28898099. The next prime is 28898117. The reversal of 28898113 is 31189882.

It can be written as a sum of positive squares in 4 ways, for example, as 2765569 + 26132544 = 1663^2 + 5112^2 .

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

It is not a de Polignac number, because 28898113 - 2⁵ = 28898081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28898117) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20553 + ... + 21913.

It is an arithmetic number, because the mean of its divisors is an integer number (3830625).

Almost surely, 2^28898113 is an apocalyptic number.

It is an amenable number.

28898113 is a deficient number, since it is larger than the sum of its proper divisors (1746887).

28898113 is a wasteful number, since it uses less digits than its factorization.

28898113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627.

The product of its digits is 27648, while the sum is 40.

The square root of 28898113 is about 5375.6965130111. The cubic root of 28898113 is about 306.8714567585.

The spelling of 28898113 in words is "twenty-eight million, eight hundred ninety-eight thousand, one hundred thirteen".