128167115 has 4 divisors (see below), whose sum is σ = 153800544. Its totient is φ = 102533688.

The previous prime is 128167093. The next prime is 128167129. The reversal of 128167115 is 511761821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128167115 - 2¹⁰ = 128166091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12816707 + ... + 12816716.

It is an arithmetic number, because the mean of its divisors is an integer number (38450136).

Almost surely, 2^128167115 is an apocalyptic number.

128167115 is a deficient number, since it is larger than the sum of its proper divisors (25633429).

128167115 is an equidigital number, since it uses as much as digits as its factorization.

128167115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25633428.

The product of its digits is 3360, while the sum is 32.

The square root of 128167115 is about 11321.0915993114. The cubic root of 128167115 is about 504.1876492721.

The spelling of 128167115 in words is "one hundred twenty-eight million, one hundred sixty-seven thousand, one hundred fifteen".