28717303 has 8 divisors (see below), whose sum is σ = 30293120. Its totient is φ = 27147960.

The previous prime is 28717289. The next prime is 28717307. The reversal of 28717303 is 30371782.

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

It is a de Polignac number, because none of the positive numbers 2^k-28717303 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 (28717307) 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, 9526 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (3786640).

Almost surely, 2^28717303 is an apocalyptic number.

28717303 is a deficient number, since it is larger than the sum of its proper divisors (1575817).

28717303 is a wasteful number, since it uses less digits than its factorization.

28717303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 28717303 is about 5358.8527690169. The cubic root of 28717303 is about 306.2301051632.

The spelling of 28717303 in words is "twenty-eight million, seven hundred seventeen thousand, three hundred three".