28169829 has 16 divisors (see below), whose sum is σ = 42752640. Its totient is φ = 18321120.

The previous prime is 28169821. The next prime is 28169881. The reversal of 28169829 is 92896182.

It is not a de Polignac number, because 28169829 - 2³ = 28169821 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28169821) 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, 11617 + ... + 13830.

It is an arithmetic number, because the mean of its divisors is an integer number (2672040).

Almost surely, 2^28169829 is an apocalyptic number.

It is an amenable number.

28169829 is a deficient number, since it is larger than the sum of its proper divisors (14582811).

28169829 is a wasteful number, since it uses less digits than its factorization.

28169829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25497 (or 25491 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 28169829 is about 5307.5256947094. The cubic root of 28169829 is about 304.2715897318.

The spelling of 28169829 in words is "twenty-eight million, one hundred sixty-nine thousand, eight hundred twenty-nine".