28048386 has 16 divisors (see below), whose sum is σ = 56174400. Its totient is φ = 9336528.

The previous prime is 28048379. The next prime is 28048399. The reversal of 28048386 is 68384082.

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, 2155 + ... + 7793.

It is an arithmetic number, because the mean of its divisors is an integer number (3510900).

Almost surely, 2^28048386 is an apocalyptic number.

28048386 is an abundant number, since it is smaller than the sum of its proper divisors (28126014).

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

28048386 is a wasteful number, since it uses less digits than its factorization.

28048386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 28048386 is about 5296.0726958757. The cubic root of 28048386 is about 303.8337112839.

The spelling of 28048386 in words is "twenty-eight million, forty-eight thousand, three hundred eighty-six".