28658043 has 40 divisors (see below), whose sum is σ = 45023616. Its totient is φ = 18144000.

The previous prime is 28658029. The next prime is 28658051. The reversal of 28658043 is 34085682.

It is not a de Polignac number, because 28658043 - 2⁴ = 28658027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28657989 and 28658007.

It is not an unprimeable number, because it can be changed into a prime (28658053) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 253555 + ... + 253667.

Almost surely, 2^28658043 is an apocalyptic number.

28658043 is a deficient number, since it is larger than the sum of its proper divisors (16365573).

28658043 is a wasteful number, since it uses less digits than its factorization.

28658043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28658043 is about 5353.3207451077. The cubic root of 28658043 is about 306.0193182729.

The spelling of 28658043 in words is "twenty-eight million, six hundred fifty-eight thousand, forty-three".