28208085774 has 16 divisors (see below), whose sum is σ = 61544914560. Its totient is φ = 8547904760.

The previous prime is 28208085757. The next prime is 28208085779. The reversal of 28208085774 is 47758080282.

It is a super-2 number, since 2×28208085774² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28208085779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213697554 + ... + 213697685.

It is an arithmetic number, because the mean of its divisors is an integer number (3846557160).

Almost surely, 2^28208085774 is an apocalyptic number.

28208085774 is an abundant number, since it is smaller than the sum of its proper divisors (33336828786).

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

28208085774 is a wasteful number, since it uses less digits than its factorization.

28208085774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427395255.

The product of its (nonzero) digits is 2007040, while the sum is 51.

The spelling of 28208085774 in words is "twenty-eight billion, two hundred eight million, eighty-five thousand, seven hundred seventy-four".