128162984 has 16 divisors (see below), whose sum is σ = 245419200. Its totient is φ = 62717872.

The previous prime is 128162971. The next prime is 128162989. The reversal of 128162984 is 489261821.

It is not an unprimeable number, because it can be changed into a prime (128162989) 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, 170054 + ... + 170805.

It is an arithmetic number, because the mean of its divisors is an integer number (15338700).

Almost surely, 2^128162984 is an apocalyptic number.

It is an amenable number.

128162984 is a deficient number, since it is larger than the sum of its proper divisors (117256216).

128162984 is a wasteful number, since it uses less digits than its factorization.

128162984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340912 (or 340908 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 128162984 is about 11320.9091507705. The cubic root of 128162984 is about 504.1822323299.

The spelling of 128162984 in words is "one hundred twenty-eight million, one hundred sixty-two thousand, nine hundred eighty-four".