28265829 has 4 divisors (see below), whose sum is σ = 37687776. Its totient is φ = 18843884.

The previous prime is 28265821. The next prime is 28265833. The reversal of 28265829 is 92856282.

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 28265829 - 2³ = 28265821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28265821) 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, 4710969 + ... + 4710974.

It is an arithmetic number, because the mean of its divisors is an integer number (9421944).

Almost surely, 2^28265829 is an apocalyptic number.

It is an amenable number.

28265829 is a deficient number, since it is larger than the sum of its proper divisors (9421947).

28265829 is an equidigital number, since it uses as much as digits as its factorization.

28265829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9421946.

The product of its digits is 138240, while the sum is 42.

The square root of 28265829 is about 5316.5617649003. The cubic root of 28265829 is about 304.6168403616.

The spelling of 28265829 in words is "twenty-eight million, two hundred sixty-five thousand, eight hundred twenty-nine".