127985738 has 16 divisors (see below), whose sum is σ = 199392840. Its totient is φ = 61560576.

The previous prime is 127985719. The next prime is 127985749. The reversal of 127985738 is 837589721.

It can be written as a sum of positive squares in 4 ways, for example, as 90003169 + 37982569 = 9487^2 + 6163^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131 + ... + 16302.

Almost surely, 2^127985738 is an apocalyptic number.

127985738 is a deficient number, since it is larger than the sum of its proper divisors (71407102).

127985738 is a wasteful number, since it uses less digits than its factorization.

127985738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561.

The product of its digits is 846720, while the sum is 50.

The square root of 127985738 is about 11313.0781841195. The cubic root of 127985738 is about 503.9497015606.

The spelling of 127985738 in words is "one hundred twenty-seven million, nine hundred eighty-five thousand, seven hundred thirty-eight".