28442223320040 has 128 divisors (see below), whose sum is σ = 97865714764800. Its totient is φ = 7339928590080.

The previous prime is 28442223320003. The next prime is 28442223320047. The reversal of 28442223320040 is 4002332224482.

28442223320040 is a `hidden beast` number, since 2 + 8 + 4 + 422 + 23 + 3 + 200 + 4 + 0 = 666.

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 = 28442223319977 and 28442223320004.

It is not an unprimeable number, because it can be changed into a prime (28442223320047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424730907 + ... + 424797866.

It is an arithmetic number, because the mean of its divisors is an integer number (764575896600).

Almost surely, 2^{28442223320040} is an apocalyptic number.

28442223320040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28442223320040 is an abundant number, since it is smaller than the sum of its proper divisors (69423491444760).

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

28442223320040 is a wasteful number, since it uses less digits than its factorization.

28442223320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849528824 (or 849528814 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The spelling of 28442223320040 in words is "twenty-eight trillion, four hundred forty-two billion, two hundred twenty-three million, three hundred twenty thousand, forty".