127377640 has 32 divisors (see below), whose sum is σ = 308647080. Its totient is φ = 47031552.

The previous prime is 127377631. The next prime is 127377641. The reversal of 127377640 is 46773721.

It can be written as a sum of positive squares in 4 ways, for example, as 45185284 + 82192356 = 6722^2 + 9066^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 127377640.

It is not an unprimeable number, because it can be changed into a prime (127377641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121959 + ... + 122998.

Almost surely, 2^127377640 is an apocalyptic number.

127377640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127377640 is an abundant number, since it is smaller than the sum of its proper divisors (181269440).

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

127377640 is a wasteful number, since it uses less digits than its factorization.

127377640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244981 (or 244977 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 127377640 is about 11286.1702982012. The cubic root of 127377640 is about 503.1502962475.

The spelling of 127377640 in words is "one hundred twenty-seven million, three hundred seventy-seven thousand, six hundred forty".