28652203 has 4 divisors (see below), whose sum is σ = 29640240. Its totient is φ = 27664168.

The previous prime is 28652179. The next prime is 28652207. The reversal of 28652203 is 30225682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28652203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28652207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493975 + ... + 494032.

It is an arithmetic number, because the mean of its divisors is an integer number (7410060).

Almost surely, 2^28652203 is an apocalyptic number.

28652203 is a deficient number, since it is larger than the sum of its proper divisors (988037).

28652203 is an equidigital number, since it uses as much as digits as its factorization.

28652203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988036.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28652203 is about 5352.7752614882. The cubic root of 28652203 is about 305.9985297607.

Adding to 28652203 its reverse (30225682), we get a palindrome (58877885).

The spelling of 28652203 in words is "twenty-eight million, six hundred fifty-two thousand, two hundred three".