28707853 has 4 divisors (see below), whose sum is σ = 28770588. Its totient is φ = 28645120.

The previous prime is 28707827. The next prime is 28707857. The reversal of 28707853 is 35870782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9715689 + 18992164 = 3117^2 + 4358^2 .

It is a cyclic number.

It is not a de Polignac number, because 28707853 - 2¹³ = 28699661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28707857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30676 + ... + 31597.

It is an arithmetic number, because the mean of its divisors is an integer number (7192647).

Almost surely, 2^28707853 is an apocalyptic number.

It is an amenable number.

28707853 is a deficient number, since it is larger than the sum of its proper divisors (62735).

28707853 is an equidigital number, since it uses as much as digits as its factorization.

28707853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62734.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 28707853 is about 5357.9709778983. The cubic root of 28707853 is about 306.1965111081.

The spelling of 28707853 in words is "twenty-eight million, seven hundred seven thousand, eight hundred fifty-three".