127011690 has 48 divisors (see below), whose sum is σ = 355636008. Its totient is φ = 31264128.

The previous prime is 127011679. The next prime is 127011707. The reversal of 127011690 is 96110721.

It can be written as a sum of positive squares in 4 ways, for example, as 76160529 + 50851161 = 8727^2 + 7131^2 .

It is a super-2 number, since 2×127011690² = 32263938793312200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53109 + ... + 55448.

Almost surely, 2^127011690 is an apocalyptic number.

127011690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127011690 is an abundant number, since it is smaller than the sum of its proper divisors (228624318).

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

127011690 is a wasteful number, since it uses less digits than its factorization.

127011690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108583 (or 108580 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 127011690 is about 11269.9463175296. The cubic root of 127011690 is about 502.6679916528.

The spelling of 127011690 in words is "one hundred twenty-seven million, eleven thousand, six hundred ninety".