70728125328 has 240 divisors, whose sum is σ = 238383849600. Its totient is φ = 19123568640.

The previous prime is 70728125327. The next prime is 70728125329. The reversal of 70728125328 is 82352182707.

It is an interprime number because it is at equal distance from previous prime (70728125327) and next prime (70728125329).

It is not an unprimeable number, because it can be changed into a prime (70728125327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26983858 + ... + 26986478.

It is an arithmetic number, because the mean of its divisors is an integer number (993266040).

Almost surely, 2^70728125328 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 70728125328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119191924800).

70728125328 is an abundant number, since it is smaller than the sum of its proper divisors (167655724272).

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

70728125328 is a wasteful number, since it uses less digits than its factorization.

70728125328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070 (or 4061 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 70728125328 in words is "seventy billion, seven hundred twenty-eight million, one hundred twenty-five thousand, three hundred twenty-eight".