127726728 has 64 divisors (see below), whose sum is σ = 337996800. Its totient is φ = 40138560.

The previous prime is 127726699. The next prime is 127726733. The reversal of 127726728 is 827627721.

It is a self number, because there is not a number n which added to its sum of digits gives 127726728.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37563 + ... + 40821.

It is an arithmetic number, because the mean of its divisors is an integer number (5281200).

Almost surely, 2^127726728 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 127726728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168998400).

127726728 is an abundant number, since it is smaller than the sum of its proper divisors (210270072).

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

127726728 is a wasteful number, since it uses less digits than its factorization.

127726728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362 (or 3358 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 127726728 is about 11301.6250158993. The cubic root of 127726728 is about 503.6095173989.

The spelling of 127726728 in words is "one hundred twenty-seven million, seven hundred twenty-six thousand, seven hundred twenty-eight".