28800943 has 4 divisors (see below), whose sum is σ = 28848240. Its totient is φ = 28753648.

The previous prime is 28800931. The next prime is 28800977. The reversal of 28800943 is 34900882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34900882 = 2 ⋅17450441.

It is a cyclic number.

It is not a de Polignac number, because 28800943 - 2²¹ = 26703791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28800899 and 28800908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28800913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22723 + ... + 23956.

It is an arithmetic number, because the mean of its divisors is an integer number (7212060).

Almost surely, 2^28800943 is an apocalyptic number.

28800943 is a deficient number, since it is larger than the sum of its proper divisors (47297).

28800943 is an equidigital number, since it uses as much as digits as its factorization.

28800943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47296.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28800943 is about 5366.6510041179. The cubic root of 28800943 is about 306.5271184292.

The spelling of 28800943 in words is "twenty-eight million, eight hundred thousand, nine hundred forty-three".