28528203 has 8 divisors (see below), whose sum is σ = 41495616. Its totient is φ = 17289800.

The previous prime is 28528189. The next prime is 28528231. The reversal of 28528203 is 30282582.

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

It is not a de Polignac number, because 28528203 - 2¹² = 28524107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28528273) 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, 432213 + ... + 432278.

It is an arithmetic number, because the mean of its divisors is an integer number (5186952).

Almost surely, 2^28528203 is an apocalyptic number.

28528203 is a deficient number, since it is larger than the sum of its proper divisors (12967413).

28528203 is a wasteful number, since it uses less digits than its factorization.

28528203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864505.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 28528203 is about 5341.1799258216. The cubic root of 28528203 is about 305.5564615192.

The spelling of 28528203 in words is "twenty-eight million, five hundred twenty-eight thousand, two hundred three".