128160715 has 32 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 93346176.

The previous prime is 128160707. The next prime is 128160733. The reversal of 128160715 is 517061821.

It is a cyclic number.

It is not a de Polignac number, because 128160715 - 2³ = 128160707 is a prime.

It is a super-2 number, since 2×128160715² = 32850337738622450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276574 + ... + 277036.

It is an arithmetic number, because the mean of its divisors is an integer number (5261760).

Almost surely, 2^128160715 is an apocalyptic number.

128160715 is a deficient number, since it is larger than the sum of its proper divisors (40215605).

128160715 is a wasteful number, since it uses less digits than its factorization.

128160715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 128160715 is about 11320.8089375274. The cubic root of 128160715 is about 504.1792569616.

The spelling of 128160715 in words is "one hundred twenty-eight million, one hundred sixty thousand, seven hundred fifteen".