28645508802 has 16 divisors (see below), whose sum is σ = 60306334560. Its totient is φ = 9045950112.

The previous prime is 28645508791. The next prime is 28645508803. The reversal of 28645508802 is 20880554682.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28645508803) 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, 125638083 + ... + 125638310.

It is an arithmetic number, because the mean of its divisors is an integer number (3769145910).

Almost surely, 2^28645508802 is an apocalyptic number.

28645508802 is an abundant number, since it is smaller than the sum of its proper divisors (31660825758).

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

28645508802 is a wasteful number, since it uses less digits than its factorization.

28645508802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251276417.

The product of its (nonzero) digits is 1228800, while the sum is 48.

The spelling of 28645508802 in words is "twenty-eight billion, six hundred forty-five million, five hundred eight thousand, eight hundred two".