28753843 has 4 divisors (see below), whose sum is σ = 28883008. Its totient is φ = 28624680.

The previous prime is 28753759. The next prime is 28753849. The reversal of 28753843 is 34835782.

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

It is a cyclic number.

It is not a de Polignac number, because 28753843 - 2¹⁷ = 28622771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28753796 and 28753805.

It is not an unprimeable number, because it can be changed into a prime (28753849) 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, 64248 + ... + 64693.

It is an arithmetic number, because the mean of its divisors is an integer number (7220752).

Almost surely, 2^28753843 is an apocalyptic number.

28753843 is a deficient number, since it is larger than the sum of its proper divisors (129165).

28753843 is a wasteful number, since it uses less digits than its factorization.

28753843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129164.

The product of its digits is 161280, while the sum is 40.

The square root of 28753843 is about 5362.2609970049. The cubic root of 28753843 is about 306.3599328781.

The spelling of 28753843 in words is "twenty-eight million, seven hundred fifty-three thousand, eight hundred forty-three".