28885745742 has 64 divisors (see below), whose sum is σ = 68380830720. Its totient is φ = 7959200256.

The previous prime is 28885745677. The next prime is 28885745743. The reversal of 28885745742 is 24754758882.

It is a super-2 number, since 2×28885745742² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885745743) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1066998 + ... + 1093734.

It is an arithmetic number, because the mean of its divisors is an integer number (1068450480).

Almost surely, 2^28885745742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28885745742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34190415360).

28885745742 is an abundant number, since it is smaller than the sum of its proper divisors (39495084978).

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

28885745742 is a wasteful number, since it uses less digits than its factorization.

28885745742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27665.

The product of its digits is 40140800, while the sum is 60.

The spelling of 28885745742 in words is "twenty-eight billion, eight hundred eighty-five million, seven hundred forty-five thousand, seven hundred forty-two".