28889043 has 4 divisors (see below), whose sum is σ = 38518728. Its totient is φ = 19259360.

The previous prime is 28889041. The next prime is 28889057. The reversal of 28889043 is 34098882.

It is a happy number.

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 28889043 - 2¹ = 28889041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28888986 and 28889004.

It is not an unprimeable number, because it can be changed into a prime (28889041) 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, 4814838 + ... + 4814843.

It is an arithmetic number, because the mean of its divisors is an integer number (9629682).

Almost surely, 2^28889043 is an apocalyptic number.

28889043 is a deficient number, since it is larger than the sum of its proper divisors (9629685).

28889043 is an equidigital number, since it uses as much as digits as its factorization.

28889043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9629684.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 28889043 is about 5374.8528351947. The cubic root of 28889043 is about 306.8393483719.

The spelling of 28889043 in words is "twenty-eight million, eight hundred eighty-nine thousand, forty-three".