28207182816 has 72 divisors (see below), whose sum is σ = 84932671824. Its totient is φ = 8849310720.

The previous prime is 28207182797. The next prime is 28207182821. The reversal of 28207182816 is 61828170282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2875740 + ... + 2885531.

It is an arithmetic number, because the mean of its divisors is an integer number (1179620442).

Almost surely, 2^28207182816 is an apocalyptic number.

It is an amenable number.

28207182816 is an abundant number, since it is smaller than the sum of its proper divisors (56725489008).

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

28207182816 is a wasteful number, since it uses less digits than its factorization.

28207182816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761304 (or 5761293 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 28207182816 in words is "twenty-eight billion, two hundred seven million, one hundred eighty-two thousand, eight hundred sixteen".