28999303 has 8 divisors (see below), whose sum is σ = 29379168. Its totient is φ = 28621824.

The previous prime is 28999283. The next prime is 28999319. The reversal of 28999303 is 30399982.

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 not a de Polignac number, because 28999303 - 2²¹ = 26902151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28999303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999403) 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, 39526 + ... + 40252.

It is an arithmetic number, because the mean of its divisors is an integer number (3672396).

Almost surely, 2^28999303 is an apocalyptic number.

28999303 is a deficient number, since it is larger than the sum of its proper divisors (379865).

28999303 is a wasteful number, since it uses less digits than its factorization.

28999303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 28999303 is about 5385.1000919203. The cubic root of 28999303 is about 307.2292211640.

The spelling of 28999303 in words is "twenty-eight million, nine hundred ninety-nine thousand, three hundred three".