28717035072 has 224 divisors, whose sum is σ = 84674903040. Its totient is φ = 8515921920.

The previous prime is 28717035059. The next prime is 28717035107. The reversal of 28717035072 is 27053071782.

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, 39500373 + ... + 39501099.

It is an arithmetic number, because the mean of its divisors is an integer number (378012960).

Almost surely, 2^28717035072 is an apocalyptic number.

28717035072 is a gapful number since it is divisible by the number (22) 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 28717035072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42337451520).

28717035072 is an abundant number, since it is smaller than the sum of its proper divisors (55957867968).

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

28717035072 is a wasteful number, since it uses less digits than its factorization.

28717035072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 28717035072 in words is "twenty-eight billion, seven hundred seventeen million, thirty-five thousand, seventy-two".