28573839 has 12 divisors (see below), whose sum is σ = 47169616. Its totient is φ = 16327872.

The previous prime is 28573819. The next prime is 28573841. The reversal of 28573839 is 93837582.

It is not a de Polignac number, because 28573839 - 2⁵ = 28573807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28573794 and 28573803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226714 + ... + 226839.

Almost surely, 2^28573839 is an apocalyptic number.

28573839 is a deficient number, since it is larger than the sum of its proper divisors (18595777).

28573839 is a wasteful number, since it uses less digits than its factorization.

28573839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453566 (or 453563 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 28573839 is about 5345.4503084399. The cubic root of 28573839 is about 305.7193055858.

The spelling of 28573839 in words is "twenty-eight million, five hundred seventy-three thousand, eight hundred thirty-nine".