28980017 has 8 divisors (see below), whose sum is σ = 31732032. Its totient is φ = 26247600.

The previous prime is 28980013. The next prime is 28980047. The reversal of 28980017 is 71008982.

It is a happy number.

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 28980017 - 2² = 28980013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28980013) 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, 1709 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (3966504).

Almost surely, 2^28980017 is an apocalyptic number.

It is an amenable number.

28980017 is a deficient number, since it is larger than the sum of its proper divisors (2752015).

28980017 is a wasteful number, since it uses less digits than its factorization.

28980017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9799.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 28980017 is about 5383.3091124326. The cubic root of 28980017 is about 307.1610984144.

Adding to 28980017 its reverse (71008982), we get a palindrome (99988999).

The spelling of 28980017 in words is "twenty-eight million, nine hundred eighty thousand, seventeen".