127972928 has 28 divisors (see below), whose sum is σ = 255030732. Its totient is φ = 63713280.

The previous prime is 127972927. The next prime is 127972967. The reversal of 127972928 is 829279721.

It can be written as a sum of positive squares in 2 ways, for example, as 116467264 + 11505664 = 10792^2 + 3392^2 .

It is not an unprimeable number, because it can be changed into a prime (127972921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11276 + ... + 19572.

Almost surely, 2^127972928 is an apocalyptic number.

It is an amenable number.

127972928 is a deficient number, since it is larger than the sum of its proper divisors (127057804).

127972928 is an equidigital number, since it uses as much as digits as its factorization.

127972928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8550 (or 8540 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The square root of 127972928 is about 11312.5120110433. The cubic root of 127972928 is about 503.9328876792.

The spelling of 127972928 in words is "one hundred twenty-seven million, nine hundred seventy-two thousand, nine hundred twenty-eight".