28488116 has 6 divisors (see below), whose sum is σ = 49854210. Its totient is φ = 14244056.

The previous prime is 28488067. The next prime is 28488127. The reversal of 28488116 is 61188482.

It can be written as a sum of positive squares in only one way, i.e., 27604516 + 883600 = 5254^2 + 940^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28488116.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3561011 + ... + 3561018.

It is an arithmetic number, because the mean of its divisors is an integer number (8309035).

Almost surely, 2^28488116 is an apocalyptic number.

It is an amenable number.

28488116 is a deficient number, since it is larger than the sum of its proper divisors (21366094).

28488116 is a wasteful number, since it uses less digits than its factorization.

28488116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122033 (or 7122031 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 28488116 is about 5337.4259713836. The cubic root of 28488116 is about 305.4132747507.

The spelling of 28488116 in words is "twenty-eight million, four hundred eighty-eight thousand, one hundred sixteen".