28028064253800 has 384 divisors, whose sum is σ = 94008865547520. Its totient is φ = 6866933760000.

The previous prime is 28028064253781. The next prime is 28028064253817. The reversal of 28028064253800 is 835246082082.

It is a self number, because there is not a number n which added to its sum of digits gives 28028064253800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5754065365 + ... + 5754070235.

It is an arithmetic number, because the mean of its divisors is an integer number (244814754030).

Almost surely, 2^{28028064253800} is an apocalyptic number.

28028064253800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28028064253800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47004432773760).

28028064253800 is an abundant number, since it is smaller than the sum of its proper divisors (65980801293720).

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

28028064253800 is a wasteful number, since it uses less digits than its factorization.

28028064253800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205 (or 8196 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 28028064253800 in words is "twenty-eight trillion, twenty-eight billion, sixty-four million, two hundred fifty-three thousand, eight hundred".