28200646340 has 24 divisors (see below), whose sum is σ = 59226457920. Its totient is φ = 11279287008.

The previous prime is 28200646319. The next prime is 28200646373. The reversal of 28200646340 is 4364600282.

It is a self number, because there is not a number n which added to its sum of digits gives 28200646340.

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 7 ways as a sum of consecutive naturals, for example, 205841 + ... + 314279.

It is an arithmetic number, because the mean of its divisors is an integer number (2467769080).

Almost surely, 2^28200646340 is an apocalyptic number.

28200646340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28200646340 is an abundant number, since it is smaller than the sum of its proper divisors (31025811580).

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

28200646340 is a wasteful number, since it uses less digits than its factorization.

28200646340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121451 (or 121449 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 28200646340 in words is "twenty-eight billion, two hundred million, six hundred forty-six thousand, three hundred forty".