28729203 has 8 divisors (see below), whose sum is σ = 39196608. Its totient is φ = 18707304.

The previous prime is 28729199. The next prime is 28729229. The reversal of 28729203 is 30292782.

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

It is not a de Polignac number, because 28729203 - 2² = 28729199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28729243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111225 + ... + 111482.

It is an arithmetic number, because the mean of its divisors is an integer number (4899576).

Almost surely, 2^28729203 is an apocalyptic number.

28729203 is a deficient number, since it is larger than the sum of its proper divisors (10467405).

28729203 is a wasteful number, since it uses less digits than its factorization.

28729203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222753.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 28729203 is about 5359.9629662900. The cubic root of 28729203 is about 306.2723983063.

The spelling of 28729203 in words is "twenty-eight million, seven hundred twenty-nine thousand, two hundred three".