127691968 has 14 divisors (see below), whose sum is σ = 253388876. Its totient is φ = 63845952.

The previous prime is 127691891. The next prime is 127691969. The reversal of 127691968 is 869196721.

It is not an unprimeable number, because it can be changed into a prime (127691969) by changing a digit.

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 as a sum of consecutive naturals, namely, 997530 + ... + 997657.

Almost surely, 2^127691968 is an apocalyptic number.

It is an amenable number.

127691968 is a deficient number, since it is larger than the sum of its proper divisors (125696908).

127691968 is an equidigital number, since it uses as much as digits as its factorization.

127691968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995199 (or 1995189 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The square root of 127691968 is about 11300.0870793105. The cubic root of 127691968 is about 503.5638285669.

The spelling of 127691968 in words is "one hundred twenty-seven million, six hundred ninety-one thousand, nine hundred sixty-eight".