28978303 has 8 divisors (see below), whose sum is σ = 29388800. Its totient is φ = 28570968.

The previous prime is 28978283. The next prime is 28978307. The reversal of 28978303 is 30387982.

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 a de Polignac number, because none of the positive numbers 2^k-28978303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28978307) 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, 22018 + ... + 23296.

It is an arithmetic number, because the mean of its divisors is an integer number (3673600).

Almost surely, 2^28978303 is an apocalyptic number.

28978303 is a deficient number, since it is larger than the sum of its proper divisors (410497).

28978303 is a wasteful number, since it uses less digits than its factorization.

28978303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 28978303 is about 5383.1499143160. The cubic root of 28978303 is about 307.1550426956.

The spelling of 28978303 in words is "twenty-eight million, nine hundred seventy-eight thousand, three hundred three".