28037944188 has 36 divisors (see below), whose sum is σ = 72381647520. Its totient is φ = 9147130176.

The previous prime is 28037944147. The next prime is 28037944211. The reversal of 28037944188 is 88144973082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28037944188² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8283753 + ... + 8287136.

It is an arithmetic number, because the mean of its divisors is an integer number (2010601320).

Almost surely, 2^28037944188 is an apocalyptic number.

It is an amenable number.

28037944188 is an abundant number, since it is smaller than the sum of its proper divisors (44343703332).

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

28037944188 is a wasteful number, since it uses less digits than its factorization.

28037944188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16570946 (or 16570941 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 28037944188 in words is "twenty-eight billion, thirty-seven million, nine hundred forty-four thousand, one hundred eighty-eight".