28419443 has 16 divisors (see below), whose sum is σ = 31549056. Its totient is φ = 25436160.

The previous prime is 28419439. The next prime is 28419493. The reversal of 28419443 is 34491482.

It is a cyclic number.

It is not a de Polignac number, because 28419443 - 2² = 28419439 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28419493) 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, 117803 + ... + 118043.

It is an arithmetic number, because the mean of its divisors is an integer number (1971816).

Almost surely, 2^28419443 is an apocalyptic number.

28419443 is a deficient number, since it is larger than the sum of its proper divisors (3129613).

28419443 is a wasteful number, since it uses less digits than its factorization.

28419443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its digits is 27648, while the sum is 35.

The square root of 28419443 is about 5330.9889326465. The cubic root of 28419443 is about 305.1676691640.

The spelling of 28419443 in words is "twenty-eight million, four hundred nineteen thousand, four hundred forty-three".