162729728 has 72 divisors (see below), whose sum is σ = 376750080. Its totient is φ = 68705280.

The previous prime is 162729719. The next prime is 162729733. The reversal of 162729728 is 827927261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126593 + ... + 127871.

It is an arithmetic number, because the mean of its divisors is an integer number (5232640).

Almost surely, 2^162729728 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 162729728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188375040).

162729728 is an abundant number, since it is smaller than the sum of its proper divisors (214020352).

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

162729728 is an equidigital number, since it uses as much as digits as its factorization.

162729728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373 (or 1359 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 162729728 is about 12756.5562751081. The cubic root of 162729728 is about 545.9534727580.

The spelling of 162729728 in words is "one hundred sixty-two million, seven hundred twenty-nine thousand, seven hundred twenty-eight".