28267829 has 4 divisors (see below), whose sum is σ = 28281120. Its totient is φ = 28254540.

The previous prime is 28267817. The next prime is 28267831. The reversal of 28267829 is 92876282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28267829 - 2¹² = 28263733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28267829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28267229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657 + ... + 7974.

It is an arithmetic number, because the mean of its divisors is an integer number (7070280).

Almost surely, 2^28267829 is an apocalyptic number.

It is an amenable number.

28267829 is a deficient number, since it is larger than the sum of its proper divisors (13291).

28267829 is a wasteful number, since it uses less digits than its factorization.

28267829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13290.

The product of its digits is 193536, while the sum is 44.

The square root of 28267829 is about 5316.7498530587. The cubic root of 28267829 is about 304.6240247645.

The spelling of 28267829 in words is "twenty-eight million, two hundred sixty-seven thousand, eight hundred twenty-nine".