28717300140 has 72 divisors (see below), whose sum is σ = 81627244272. Its totient is φ = 7543578240.

The previous prime is 28717300091. The next prime is 28717300211. The reversal of 28717300140 is 4100371782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216030 + ... + 322650.

It is an arithmetic number, because the mean of its divisors is an integer number (1133711726).

Almost surely, 2^28717300140 is an apocalyptic number.

28717300140 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 28717300140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40813622136).

28717300140 is an abundant number, since it is smaller than the sum of its proper divisors (52909944132).

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

28717300140 is a wasteful number, since it uses less digits than its factorization.

28717300140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106767 (or 106698 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 28717300140 in words is "twenty-eight billion, seven hundred seventeen million, three hundred thousand, one hundred forty".