734738275128 has 128 divisors (see below), whose sum is σ = 2159940142080. Its totient is φ = 205333808640.

The previous prime is 734738275109. The next prime is 734738275151. The reversal of 734738275128 is 821572837437.

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, 3688450 + ... + 3882542.

It is an arithmetic number, because the mean of its divisors is an integer number (16874532360).

Almost surely, 2^734738275128 is an apocalyptic number.

734738275128 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 734738275128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079970071040).

734738275128 is an abundant number, since it is smaller than the sum of its proper divisors (1425201866952).

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

734738275128 is a wasteful number, since it uses less digits than its factorization.

734738275128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195229 (or 195225 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 57.

The spelling of 734738275128 in words is "seven hundred thirty-four billion, seven hundred thirty-eight million, two hundred seventy-five thousand, one hundred twenty-eight".