28942575536 has 80 divisors (see below), whose sum is σ = 65648774400. Its totient is φ = 12102338304.

The previous prime is 28942575533. The next prime is 28942575551. The reversal of 28942575536 is 63557524982.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (28942575533) 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 15 ways as a sum of consecutive naturals, for example, 5338235 + ... + 5343653.

It is an arithmetic number, because the mean of its divisors is an integer number (820609680).

Almost surely, 2^28942575536 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 28942575536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32824387200).

28942575536 is an abundant number, since it is smaller than the sum of its proper divisors (36706198864).

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

28942575536 is a wasteful number, since it uses less digits than its factorization.

28942575536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6586 (or 6580 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 56.

The spelling of 28942575536 in words is "twenty-eight billion, nine hundred forty-two million, five hundred seventy-five thousand, five hundred thirty-six".