74838628488 has 128 divisors (see below), whose sum is σ = 214083475200. Its totient is φ = 21672281088.

The previous prime is 74838628483. The next prime is 74838628489. The reversal of 74838628488 is 88482683847.

It is a super-2 number, since 2×74838628488² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74838628483) 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, 1508445 + ... + 1557267.

It is an arithmetic number, because the mean of its divisors is an integer number (1672527150).

Almost surely, 2^74838628488 is an apocalyptic number.

74838628488 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74838628488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107041737600).

74838628488 is an abundant number, since it is smaller than the sum of its proper divisors (139244846712).

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

74838628488 is a wasteful number, since it uses less digits than its factorization.

74838628488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48896 (or 48858 counting only the distinct ones).

The product of its digits is 132120576, while the sum is 66.

The spelling of 74838628488 in words is "seventy-four billion, eight hundred thirty-eight million, six hundred twenty-eight thousand, four hundred eighty-eight".