28036785 has 16 divisors (see below), whose sum is σ = 51267456. Its totient is φ = 12816768.

The previous prime is 28036777. The next prime is 28036807. The reversal of 28036785 is 58763082.

It is not a de Polignac number, because 28036785 - 2³ = 28036777 is a prime.

It is a super-2 number, since 2×28036785² = 1572122626272450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133404 + ... + 133613.

It is an arithmetic number, because the mean of its divisors is an integer number (3204216).

Almost surely, 2^28036785 is an apocalyptic number.

It is an amenable number.

28036785 is a deficient number, since it is larger than the sum of its proper divisors (23230671).

28036785 is a wasteful number, since it uses less digits than its factorization.

28036785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267032.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28036785 is about 5294.9773370620. The cubic root of 28036785 is about 303.7918162891.

The spelling of 28036785 in words is "twenty-eight million, thirty-six thousand, seven hundred eighty-five".