28650203 has 8 divisors (see below), whose sum is σ = 30067200. Its totient is φ = 27247528.

The previous prime is 28650199. The next prime is 28650217. The reversal of 28650203 is 30205682.

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 28650203 - 2² = 28650199 is a prime.

It is a super-3 number, since 3×28650203³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28650403) 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, 638 + ... + 7596.

It is an arithmetic number, because the mean of its divisors is an integer number (3758400).

Almost surely, 2^28650203 is an apocalyptic number.

28650203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28650203 is a deficient number, since it is larger than the sum of its proper divisors (1416997).

28650203 is a wasteful number, since it uses less digits than its factorization.

28650203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7161.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 28650203 is about 5352.5884392507. The cubic root of 28650203 is about 305.9914097579.

Adding to 28650203 its reverse (30205682), we get a palindrome (58855885).

The spelling of 28650203 in words is "twenty-eight million, six hundred fifty thousand, two hundred three".