28387382 has 32 divisors (see below), whose sum is σ = 48605184. Its totient is φ = 12355200.

The previous prime is 28387379. The next prime is 28387391. The reversal of 28387382 is 28378382.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 23657 + ... + 24827.

It is an arithmetic number, because the mean of its divisors is an integer number (1518912).

Almost surely, 2^28387382 is an apocalyptic number.

28387382 is a deficient number, since it is larger than the sum of its proper divisors (20217802).

28387382 is a wasteful number, since it uses less digits than its factorization.

28387382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its digits is 129024, while the sum is 41.

The square root of 28387382 is about 5327.9810435098. The cubic root of 28387382 is about 305.0528690936.

The spelling of 28387382 in words is "twenty-eight million, three hundred eighty-seven thousand, three hundred eighty-two".