28975443 has 16 divisors (see below), whose sum is σ = 44279040. Its totient is φ = 16510176.

The previous prime is 28975439. The next prime is 28975459. The reversal of 28975443 is 34457982.

It is not a de Polignac number, because 28975443 - 2² = 28975439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28975395 and 28975404.

It is not an unprimeable number, because it can be changed into a prime (28975343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6396 + ... + 9942.

It is an arithmetic number, because the mean of its divisors is an integer number (2767440).

Almost surely, 2^28975443 is an apocalyptic number.

28975443 is a deficient number, since it is larger than the sum of its proper divisors (15303597).

28975443 is a wasteful number, since it uses less digits than its factorization.

28975443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its digits is 241920, while the sum is 42.

The square root of 28975443 is about 5382.8842640354. The cubic root of 28975443 is about 307.1449375223.

The spelling of 28975443 in words is "twenty-eight million, nine hundred seventy-five thousand, four hundred forty-three".