28242929 has 16 divisors (see below), whose sum is σ = 33339264. Its totient is φ = 23587200.

The previous prime is 28242923. The next prime is 28242931. The reversal of 28242929 is 92924282.

It is not a de Polignac number, because 28242929 - 2⁸ = 28242673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28242892 and 28242901.

It is not an unprimeable number, because it can be changed into a prime (28242923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44444 + ... + 45074.

It is an arithmetic number, because the mean of its divisors is an integer number (2083704).

Almost surely, 2^28242929 is an apocalyptic number.

It is an amenable number.

28242929 is a deficient number, since it is larger than the sum of its proper divisors (5096335).

28242929 is a wasteful number, since it uses less digits than its factorization.

28242929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 41472, while the sum is 38.

The square root of 28242929 is about 5314.4076810121. The cubic root of 28242929 is about 304.5345547825.

The spelling of 28242929 in words is "twenty-eight million, two hundred forty-two thousand, nine hundred twenty-nine".