28074786 has 64 divisors (see below), whose sum is σ = 62840448. Its totient is φ = 8322048.

The previous prime is 28074779. The next prime is 28074797. The reversal of 28074786 is 68747082.

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 162196 + ... + 162368.

It is an arithmetic number, because the mean of its divisors is an integer number (981882).

Almost surely, 2^28074786 is an apocalyptic number.

28074786 is an abundant number, since it is smaller than the sum of its proper divisors (34765662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28074786 is a wasteful number, since it uses less digits than its factorization.

28074786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 28074786 is about 5298.5645225853. The cubic root of 28074786 is about 303.9290072567.

The spelling of 28074786 in words is "twenty-eight million, seventy-four thousand, seven hundred eighty-six".