28164073938 has 128 divisors (see below), whose sum is σ = 75792568320. Its totient is φ = 6738059520.

The previous prime is 28164073907. The next prime is 28164073967. The reversal of 28164073938 is 83937046182.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2920108 + ... + 2929736.

It is an arithmetic number, because the mean of its divisors is an integer number (592129440).

Almost surely, 2^28164073938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28164073938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37896284160).

28164073938 is an abundant number, since it is smaller than the sum of its proper divisors (47628494382).

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

28164073938 is a wasteful number, since it uses less digits than its factorization.

28164073938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 28164073938 in words is "twenty-eight billion, one hundred sixty-four million, seventy-three thousand, nine hundred thirty-eight".