28041880816 has 40 divisors (see below), whose sum is σ = 57202588800. Its totient is φ = 13280230080.

The previous prime is 28041880787. The next prime is 28041880819. The reversal of 28041880816 is 61808814082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28041880819) 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, 2880405 + ... + 2890123.

It is an arithmetic number, because the mean of its divisors is an integer number (1430064720).

Almost surely, 2^28041880816 is an apocalyptic number.

It is an amenable number.

28041880816 is an abundant number, since it is smaller than the sum of its proper divisors (29160707984).

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

28041880816 is a wasteful number, since it uses less digits than its factorization.

28041880816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19237 (or 19231 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 46.

The spelling of 28041880816 in words is "twenty-eight billion, forty-one million, eight hundred eighty thousand, eight hundred sixteen".