127780516 has 12 divisors (see below), whose sum is σ = 223754188. Its totient is φ = 63850752.

The previous prime is 127780511. The next prime is 127780519. The reversal of 127780516 is 615087721.

It can be written as a sum of positive squares in 2 ways, for example, as 64641600 + 63138916 = 8040^2 + 7946^2 .

It is not an unprimeable number, because it can be changed into a prime (127780511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1881 + ... + 16096.

Almost surely, 2^127780516 is an apocalyptic number.

It is an amenable number.

127780516 is a deficient number, since it is larger than the sum of its proper divisors (95973672).

127780516 is a wasteful number, since it uses less digits than its factorization.

127780516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19758 (or 19756 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 127780516 is about 11304.0044232122. The cubic root of 127780516 is about 503.6802004570.

The spelling of 127780516 in words is "one hundred twenty-seven million, seven hundred eighty thousand, five hundred sixteen".