28328703 has 8 divisors (see below), whose sum is σ = 40677168. Its totient is φ = 17433024.

The previous prime is 28328693. The next prime is 28328731. The reversal of 28328703 is 30782382.

It is a happy number.

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

It is not a de Polignac number, because 28328703 - 2⁹ = 28328191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363150 + ... + 363227.

It is an arithmetic number, because the mean of its divisors is an integer number (5084646).

Almost surely, 2^28328703 is an apocalyptic number.

28328703 is a deficient number, since it is larger than the sum of its proper divisors (12348465).

28328703 is a wasteful number, since it uses less digits than its factorization.

28328703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726393.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28328703 is about 5322.4715123709. The cubic root of 28328703 is about 304.8425345019.

The spelling of 28328703 in words is "twenty-eight million, three hundred twenty-eight thousand, seven hundred three".