28973733 has 8 divisors (see below), whose sum is σ = 38699808. Its totient is φ = 19281744.

The previous prime is 28973713. The next prime is 28973741. The reversal of 28973733 is 33737982.

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

It is not a de Polignac number, because 28973733 - 2²² = 24779429 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28973713) 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, 6466 + ... + 9987.

It is an arithmetic number, because the mean of its divisors is an integer number (4837476).

Almost surely, 2^28973733 is an apocalyptic number.

It is an amenable number.

28973733 is a deficient number, since it is larger than the sum of its proper divisors (9726075).

28973733 is a wasteful number, since it uses less digits than its factorization.

28973733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17043.

The product of its digits is 190512, while the sum is 42.

The square root of 28973733 is about 5382.7254249126. The cubic root of 28973733 is about 307.1388953003.

The spelling of 28973733 in words is "twenty-eight million, nine hundred seventy-three thousand, seven hundred thirty-three".