28102881090 has 16 divisors (see below), whose sum is σ = 67446914688. Its totient is φ = 7494101616.

The previous prime is 28102881089. The next prime is 28102881097. The reversal of 28102881090 is 9018820182.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28102881097) 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, 468381322 + ... + 468381381.

It is an arithmetic number, because the mean of its divisors is an integer number (4215432168).

Almost surely, 2^28102881090 is an apocalyptic number.

28102881090 is an abundant number, since it is smaller than the sum of its proper divisors (39344033598).

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

28102881090 is a wasteful number, since it uses less digits than its factorization.

28102881090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936762713.

The product of its (nonzero) digits is 18432, while the sum is 39.

The spelling of 28102881090 in words is "twenty-eight billion, one hundred two million, eight hundred eighty-one thousand, ninety".