128704516 has 6 divisors (see below), whose sum is σ = 225232910. Its totient is φ = 64352256.

The previous prime is 128704507. The next prime is 128704519. The reversal of 128704516 is 615407821.

It can be written as a sum of positive squares in only one way, i.e., 94012416 + 34692100 = 9696^2 + 5890^2 .

It is not an unprimeable number, because it can be changed into a prime (128704519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16088061 + ... + 16088068.

Almost surely, 2^128704516 is an apocalyptic number.

It is an amenable number.

128704516 is a deficient number, since it is larger than the sum of its proper divisors (96528394).

128704516 is a wasteful number, since it uses less digits than its factorization.

128704516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32176133 (or 32176131 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 128704516 is about 11344.8012763556. The cubic root of 128704516 is about 504.8913480591.

The spelling of 128704516 in words is "one hundred twenty-eight million, seven hundred four thousand, five hundred sixteen".