8864720040 has 256 divisors, whose sum is σ = 31436190720. Its totient is φ = 1975357440.

The previous prime is 8864720021. The next prime is 8864720093. The reversal of 8864720040 is 400274688.

It is a super-2 number, since 2×8864720040² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 960327 + ... + 969513.

It is an arithmetic number, because the mean of its divisors is an integer number (122797620).

Almost surely, 2^8864720040 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 8864720040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15718095360).

8864720040 is an abundant number, since it is smaller than the sum of its proper divisors (22571470680).

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

8864720040 is a wasteful number, since it uses less digits than its factorization.

8864720040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9272 (or 9268 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 8864720040 is about 94152.6422358927. The cubic root of 8864720040 is about 2069.6091773071.

The spelling of 8864720040 in words is "eight billion, eight hundred sixty-four million, seven hundred twenty thousand, forty".