127932813 has 6 divisors (see below), whose sum is σ = 184791854. Its totient is φ = 85288536.

The previous prime is 127932811. The next prime is 127932823. The reversal of 127932813 is 318239721.

It can be written as a sum of positive squares in only one way, i.e., 120165444 + 7767369 = 10962^2 + 2787^2 .

It is not a de Polignac number, because 127932813 - 2¹ = 127932811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127932811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7107370 + ... + 7107387.

Almost surely, 2^127932813 is an apocalyptic number.

It is an amenable number.

127932813 is a deficient number, since it is larger than the sum of its proper divisors (56859041).

127932813 is a wasteful number, since it uses less digits than its factorization.

127932813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14214763 (or 14214760 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 127932813 is about 11310.7388352839. The cubic root of 127932813 is about 503.8802271133.

The spelling of 127932813 in words is "one hundred twenty-seven million, nine hundred thirty-two thousand, eight hundred thirteen".