28929851 has 4 divisors (see below), whose sum is σ = 29863104. Its totient is φ = 27996600.

The previous prime is 28929847. The next prime is 28929853. The reversal of 28929851 is 15892982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28929851 - 2² = 28929847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28929853) 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 3 ways as a sum of consecutive naturals, for example, 466580 + ... + 466641.

It is an arithmetic number, because the mean of its divisors is an integer number (7465776).

Almost surely, 2^28929851 is an apocalyptic number.

28929851 is a deficient number, since it is larger than the sum of its proper divisors (933253).

28929851 is an equidigital number, since it uses as much as digits as its factorization.

28929851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933252.

The product of its digits is 103680, while the sum is 44.

The square root of 28929851 is about 5378.6476924967. The cubic root of 28929851 is about 306.9837584733.

The spelling of 28929851 in words is "twenty-eight million, nine hundred twenty-nine thousand, eight hundred fifty-one".