28771844000 has 192 divisors, whose sum is σ = 73297695744. Its totient is φ = 11088000000.

The previous prime is 28771843981. The next prime is 28771844011. The reversal of 28771844000 is 44817782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41043650 + ... + 41044350.

It is an arithmetic number, because the mean of its divisors is an integer number (381758832).

Almost surely, 2^28771844000 is an apocalyptic number.

28771844000 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 28771844000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36648847872).

28771844000 is an abundant number, since it is smaller than the sum of its proper divisors (44525851744).

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

28771844000 is a wasteful number, since it uses less digits than its factorization.

28771844000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 41.

The spelling of 28771844000 in words is "twenty-eight billion, seven hundred seventy-one million, eight hundred forty-four thousand".