28432843 has 8 divisors (see below), whose sum is σ = 29042928. Its totient is φ = 27828864.

The previous prime is 28432819. The next prime is 28432879. The reversal of 28432843 is 34823482.

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 28432843 - 2¹⁷ = 28301771 is a prime.

It is a super-2 number, since 2×28432843² = 1616853122125298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28432799 and 28432808.

It is not an unprimeable number, because it can be changed into a prime (28432643) 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, 8580 + ... + 11422.

It is an arithmetic number, because the mean of its divisors is an integer number (3630366).

Almost surely, 2^28432843 is an apocalyptic number.

28432843 is a deficient number, since it is larger than the sum of its proper divisors (610085).

28432843 is a wasteful number, since it uses less digits than its factorization.

28432843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053.

The product of its digits is 36864, while the sum is 34.

The square root of 28432843 is about 5332.2455869924. The cubic root of 28432843 is about 305.2156246456.

The spelling of 28432843 in words is "twenty-eight million, four hundred thirty-two thousand, eight hundred forty-three".