28387801300 has 36 divisors (see below), whose sum is σ = 63725725980. Its totient is φ = 10963563520.

The previous prime is 28387801289. The next prime is 28387801319. The reversal of 28387801300 is 310878382.

It can be written as a sum of positive squares in 6 ways, for example, as 1476711184 + 26911090116 = 38428^2 + 164046^2 .

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, 4891549 + ... + 4897348.

It is an arithmetic number, because the mean of its divisors is an integer number (1770159055).

Almost surely, 2^28387801300 is an apocalyptic number.

28387801300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28387801300 is an abundant number, since it is smaller than the sum of its proper divisors (35337924680).

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

28387801300 is a wasteful number, since it uses less digits than its factorization.

28387801300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788940 (or 9788933 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 28387801300 in words is "twenty-eight billion, three hundred eighty-seven million, eight hundred one thousand, three hundred".