28216424166 has 16 divisors (see below), whose sum is σ = 64494683904. Its totient is φ = 8061835464.

The previous prime is 28216424149. The next prime is 28216424167. The reversal of 28216424166 is 66142461282.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 671819623 = 28216424166 / (2 + 8 + 2 + 1 + 6 + 4 + 2 + 4 + 1 + 6 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28216424167) 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, 335909770 + ... + 335909853.

It is an arithmetic number, because the mean of its divisors is an integer number (4030917744).

Almost surely, 2^28216424166 is an apocalyptic number.

28216424166 is an abundant number, since it is smaller than the sum of its proper divisors (36278259738).

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

28216424166 is a wasteful number, since it uses less digits than its factorization.

28216424166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671819635.

The product of its digits is 221184, while the sum is 42.

The spelling of 28216424166 in words is "twenty-eight billion, two hundred sixteen million, four hundred twenty-four thousand, one hundred sixty-six".