28040852840 has 1024 divisors, whose sum is σ = 97542144000. Its totient is φ = 6967296000.

The previous prime is 28040852813. The next prime is 28040852843. The reversal of 28040852840 is 4825804082.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (28040852843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 683923220 + ... + 683923260.

It is an arithmetic number, because the mean of its divisors is an integer number (95256000).

Almost surely, 2^28040852840 is an apocalyptic number.

28040852840 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 28040852840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48771072000).

28040852840 is an abundant number, since it is smaller than the sum of its proper divisors (69501291160).

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

28040852840 is a wasteful number, since it uses less digits than its factorization.

28040852840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 41.

The spelling of 28040852840 in words is "twenty-eight billion, forty million, eight hundred fifty-two thousand, eight hundred forty".