127971028 has 6 divisors (see below), whose sum is σ = 223949306. Its totient is φ = 63985512.

The previous prime is 127971017. The next prime is 127971029. The reversal of 127971028 is 820179721.

It can be written as a sum of positive squares in only one way, i.e., 105103504 + 22867524 = 10252^2 + 4782^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127971029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15996375 + ... + 15996382.

Almost surely, 2^127971028 is an apocalyptic number.

It is an amenable number.

127971028 is a deficient number, since it is larger than the sum of its proper divisors (95978278).

127971028 is a wasteful number, since it uses less digits than its factorization.

127971028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31992761 (or 31992759 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 127971028 is about 11312.4280329203. The cubic root of 127971028 is about 503.9303937215.

The spelling of 127971028 in words is "one hundred twenty-seven million, nine hundred seventy-one thousand, twenty-eight".