40886128728 has 128 divisors (see below), whose sum is σ = 121234752000. Its totient is φ = 12729467520.

The previous prime is 40886128711. The next prime is 40886128739. The reversal of 40886128728 is 82782168804.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 221226 + ... + 361542.

It is an arithmetic number, because the mean of its divisors is an integer number (947146500).

Almost surely, 2^40886128728 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 40886128728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60617376000).

40886128728 is an abundant number, since it is smaller than the sum of its proper divisors (80348623272).

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

40886128728 is a wasteful number, since it uses less digits than its factorization.

40886128728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140422 (or 140412 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The spelling of 40886128728 in words is "forty billion, eight hundred eighty-six million, one hundred twenty-eight thousand, seven hundred twenty-eight".