127747428 has 48 divisors (see below), whose sum is σ = 312560640. Its totient is φ = 40531744.

The previous prime is 127747427. The next prime is 127747429. The reversal of 127747428 is 824747721.

It is an interprime number because it is at equal distance from previous prime (127747427) and next prime (127747429).

It is a self number, because there is not a number n which added to its sum of digits gives 127747428.

It is not an unprimeable number, because it can be changed into a prime (127747427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61633 + ... + 63671.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^127747428 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 127747428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156280320).

127747428 is an abundant number, since it is smaller than the sum of its proper divisors (184813212).

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

127747428 is a wasteful number, since it uses less digits than its factorization.

127747428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296 (or 2294 counting only the distinct ones).

The product of its digits is 175616, while the sum is 42.

The square root of 127747428 is about 11302.5407763034. The cubic root of 127747428 is about 503.6367217126.

It can be divided in two parts, 12774 and 7428, that added together give a palindrome (20202).

The spelling of 127747428 in words is "one hundred twenty-seven million, seven hundred forty-seven thousand, four hundred twenty-eight".