84728878 has 32 divisors (see below), whose sum is σ = 142615872. Its totient is φ = 37497600.

The previous prime is 84728863. The next prime is 84728879. The reversal of 84728878 is 87882748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84728879) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 64375 + ... + 65677.

It is an arithmetic number, because the mean of its divisors is an integer number (4456746).

Almost surely, 2^84728878 is an apocalyptic number.

84728878 is a deficient number, since it is larger than the sum of its proper divisors (57886994).

84728878 is a wasteful number, since it uses less digits than its factorization.

84728878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420.

The product of its digits is 1605632, while the sum is 52.

The square root of 84728878 is about 9204.8290587061. The cubic root of 84728878 is about 439.2149880199.

The spelling of 84728878 in words is "eighty-four million, seven hundred twenty-eight thousand, eight hundred seventy-eight".