28916443 has 2 divisors, whose sum is σ = 28916444. Its totient is φ = 28916442.

The previous prime is 28916413. The next prime is 28916471. The reversal of 28916443 is 34461982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28916443 - 2¹³ = 28908251 is a prime.

It is not a weakly prime, because it can be changed into another prime (28916413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458221 + 14458222.

It is an arithmetic number, because the mean of its divisors is an integer number (14458222).

Almost surely, 2^28916443 is an apocalyptic number.

28916443 is a deficient number, since it is larger than the sum of its proper divisors (1).

28916443 is an equidigital number, since it uses as much as digits as its factorization.

28916443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 28916443 is about 5377.4011380964. The cubic root of 28916443 is about 306.9363256414.

The spelling of 28916443 in words is "twenty-eight million, nine hundred sixteen thousand, four hundred forty-three".