28587746 has 16 divisors (see below), whose sum is σ = 46984320. Its totient is φ = 12937680.

The previous prime is 28587721. The next prime is 28587751. The reversal of 28587746 is 64778582.

It is a self number, because there is not a number n which added to its sum of digits gives 28587746.

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 7 ways as a sum of consecutive naturals, for example, 2540 + ... + 7976.

It is an arithmetic number, because the mean of its divisors is an integer number (2936520).

Almost surely, 2^28587746 is an apocalyptic number.

28587746 is a deficient number, since it is larger than the sum of its proper divisors (18396574).

28587746 is a wasteful number, since it uses less digits than its factorization.

28587746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689.

The product of its digits is 752640, while the sum is 47.

The square root of 28587746 is about 5346.7509760601. The cubic root of 28587746 is about 305.7688958048.

The spelling of 28587746 in words is "twenty-eight million, five hundred eighty-seven thousand, seven hundred forty-six".