42674776728 has 128 divisors (see below), whose sum is σ = 116934451200. Its totient is φ = 12923172864.

The previous prime is 42674776709. The next prime is 42674776741. The reversal of 42674776728 is 82767747624.

It is a super-2 number, since 2×42674776728² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1906063 + ... + 1928321.

It is an arithmetic number, because the mean of its divisors is an integer number (913550400).

Almost surely, 2^42674776728 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 42674776728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58467225600).

42674776728 is an abundant number, since it is smaller than the sum of its proper divisors (74259674472).

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

42674776728 is a wasteful number, since it uses less digits than its factorization.

42674776728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22449 (or 22445 counting only the distinct ones).

The product of its digits is 44255232, while the sum is 60.

The spelling of 42674776728 in words is "forty-two billion, six hundred seventy-four million, seven hundred seventy-six thousand, seven hundred twenty-eight".