28673829 has 6 divisors (see below), whose sum is σ = 41417766. Its totient is φ = 19115880.

The previous prime is 28673809. The next prime is 28673833. The reversal of 28673829 is 92837682.

It can be written as a sum of positive squares in only one way, i.e., 28037025 + 636804 = 5295^2 + 798^2 .

It is not a de Polignac number, because 28673829 - 2⁵ = 28673797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28673809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1592982 + ... + 1592999.

It is an arithmetic number, because the mean of its divisors is an integer number (6902961).

Almost surely, 2^28673829 is an apocalyptic number.

It is an amenable number.

28673829 is a deficient number, since it is larger than the sum of its proper divisors (12743937).

28673829 is a wasteful number, since it uses less digits than its factorization.

28673829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185987 (or 3185984 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28673829 is about 5354.7949540575. The cubic root of 28673829 is about 306.0754971988.

The spelling of 28673829 in words is "twenty-eight million, six hundred seventy-three thousand, eight hundred twenty-nine".