8817512040 has 128 divisors (see below), whose sum is σ = 29652220800. Its totient is φ = 2330496000.

The previous prime is 8817512021. The next prime is 8817512051. The reversal of 8817512040 is 402157188.

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

It is a junction number, because it is equal to n+sod(n) for n = 8817511986 and 8817512004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85915 + ... + 158165.

It is an arithmetic number, because the mean of its divisors is an integer number (231657975).

Almost surely, 2^8817512040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8817512040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14826110400).

8817512040 is an abundant number, since it is smaller than the sum of its proper divisors (20834708760).

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

8817512040 is a wasteful number, since it uses less digits than its factorization.

8817512040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72384 (or 72374 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 8817512040 is about 93901.6082929361. The cubic root of 8817512040 is about 2065.9288182301.

The spelling of 8817512040 in words is "eight billion, eight hundred seventeen million, five hundred twelve thousand, forty".