128387162 has 8 divisors (see below), whose sum is σ = 203909076. Its totient is φ = 60417472.

The previous prime is 128387153. The next prime is 128387201. The reversal of 128387162 is 261783821.

It can be written as a sum of positive squares in 2 ways, for example, as 123454321 + 4932841 = 11111^2 + 2221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888013 + ... + 1888080.

Almost surely, 2^128387162 is an apocalyptic number.

128387162 is a deficient number, since it is larger than the sum of its proper divisors (75521914).

128387162 is a wasteful number, since it uses less digits than its factorization.

128387162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776112.

The product of its digits is 32256, while the sum is 38.

The square root of 128387162 is about 11330.8058848433. The cubic root of 128387162 is about 504.4760267997.

The spelling of 128387162 in words is "one hundred twenty-eight million, three hundred eighty-seven thousand, one hundred sixty-two".