28581752000 has 112 divisors (see below), whose sum is σ = 73066656000. Its totient is φ = 11063808000.

The previous prime is 28581751997. The next prime is 28581752029. The reversal of 28581752000 is 25718582.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190376 + ... + 305624.

Almost surely, 2^28581752000 is an apocalyptic number.

28581752000 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 28581752000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36533328000).

28581752000 is an abundant number, since it is smaller than the sum of its proper divisors (44484904000).

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

28581752000 is a wasteful number, since it uses less digits than its factorization.

28581752000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115307 (or 115287 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The spelling of 28581752000 in words is "twenty-eight billion, five hundred eighty-one million, seven hundred fifty-two thousand".