28889373 has 8 divisors (see below), whose sum is σ = 38580768. Its totient is φ = 19228784.

The previous prime is 28889363. The next prime is 28889381. The reversal of 28889373 is 37398882.

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 28889373 - 2⁶ = 28889309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28889353) 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, 5415 + ... + 9332.

It is an arithmetic number, because the mean of its divisors is an integer number (4822596).

Almost surely, 2^28889373 is an apocalyptic number.

It is an amenable number.

28889373 is a deficient number, since it is larger than the sum of its proper divisors (9691395).

28889373 is a wasteful number, since it uses less digits than its factorization.

28889373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15403.

The product of its digits is 580608, while the sum is 48.

The square root of 28889373 is about 5374.8835336219. The cubic root of 28889373 is about 306.8405167110.

The spelling of 28889373 in words is "twenty-eight million, eight hundred eighty-nine thousand, three hundred seventy-three".