28048378 has 16 divisors (see below), whose sum is σ = 43188480. Its totient is φ = 13655376.

The previous prime is 28048369. The next prime is 28048379. The reversal of 28048378 is 87384082.

It is a self number, because there is not a number n which added to its sum of digits gives 28048378.

It is not an unprimeable number, because it can be changed into a prime (28048379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20875 + ... + 22177.

It is an arithmetic number, because the mean of its divisors is an integer number (2699280).

Almost surely, 2^28048378 is an apocalyptic number.

28048378 is a deficient number, since it is larger than the sum of its proper divisors (15140102).

28048378 is a wasteful number, since it uses less digits than its factorization.

28048378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 28048378 is about 5296.0719405990. The cubic root of 28048378 is about 303.8336823972.

The spelling of 28048378 in words is "twenty-eight million, forty-eight thousand, three hundred seventy-eight".