28787335 has 4 divisors (see below), whose sum is σ = 34544808. Its totient is φ = 23029864.

The previous prime is 28787327. The next prime is 28787347. The reversal of 28787335 is 53378782.

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 28787335 - 2³ = 28787327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28787291 and 28787300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2878729 + ... + 2878738.

It is an arithmetic number, because the mean of its divisors is an integer number (8636202).

Almost surely, 2^28787335 is an apocalyptic number.

28787335 is a deficient number, since it is larger than the sum of its proper divisors (5757473).

28787335 is an equidigital number, since it uses as much as digits as its factorization.

28787335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757472.

The product of its digits is 282240, while the sum is 43.

The square root of 28787335 is about 5365.3830245379. The cubic root of 28787335 is about 306.4788343835.

The spelling of 28787335 in words is "twenty-eight million, seven hundred eighty-seven thousand, three hundred thirty-five".