28605443 has 2 divisors, whose sum is σ = 28605444. Its totient is φ = 28605442.

The previous prime is 28605439. The next prime is 28605457. The reversal of 28605443 is 34450682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28605443 - 2² = 28605439 is a prime.

It is not a weakly prime, because it can be changed into another prime (28605433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302721 + 14302722.

It is an arithmetic number, because the mean of its divisors is an integer number (14302722).

Almost surely, 2^28605443 is an apocalyptic number.

28605443 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605443 is an equidigital number, since it uses as much as digits as its factorization.

28605443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 28605443 is about 5348.4056502850. The cubic root of 28605443 is about 305.8319773311.

The spelling of 28605443 in words is "twenty-eight million, six hundred five thousand, four hundred forty-three".