28057017600 has 432 divisors, whose sum is σ = 108945527040. Its totient is φ = 7041024000.

The previous prime is 28057017529. The next prime is 28057017629. The reversal of 28057017600 is 671075082.

28057017600 is a `hidden beast` number, since 2 + 80 + 570 + 1 + 7 + 6 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2932825 + ... + 2942375.

It is an arithmetic number, because the mean of its divisors is an integer number (252188720).

Almost surely, 2^28057017600 is an apocalyptic number.

28057017600 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 28057017600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54472763520).

28057017600 is an abundant number, since it is smaller than the sum of its proper divisors (80888509440).

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

28057017600 is a wasteful number, since it uses less digits than its factorization.

28057017600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9603 (or 9578 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The spelling of 28057017600 in words is "twenty-eight billion, fifty-seven million, seventeen thousand, six hundred".