28813697 has 8 divisors (see below), whose sum is σ = 31492800. Its totient is φ = 26144560.

The previous prime is 28813627. The next prime is 28813723. The reversal of 28813697 is 79631882.

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 28813697 - 2¹⁰ = 28812673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28813627) 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, 4403 + ... + 8775.

It is an arithmetic number, because the mean of its divisors is an integer number (3936600).

Almost surely, 2^28813697 is an apocalyptic number.

It is an amenable number.

28813697 is a deficient number, since it is larger than the sum of its proper divisors (2679103).

28813697 is a wasteful number, since it uses less digits than its factorization.

28813697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983.

The product of its digits is 145152, while the sum is 44.

The square root of 28813697 is about 5367.8391369340. The cubic root of 28813697 is about 306.5723584981.

The spelling of 28813697 in words is "twenty-eight million, eight hundred thirteen thousand, six hundred ninety-seven".