128116662 has 16 divisors (see below), whose sum is σ = 256473840. Its totient is φ = 42665472.

The previous prime is 128116661. The next prime is 128116669. The reversal of 128116662 is 266611821.

It is a super-3 number, since 3×128116662³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128116661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2683 + ... + 16230.

It is an arithmetic number, because the mean of its divisors is an integer number (16029615).

Almost surely, 2^128116662 is an apocalyptic number.

128116662 is an abundant number, since it is smaller than the sum of its proper divisors (128357178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128116662 is a wasteful number, since it uses less digits than its factorization.

128116662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20047.

The product of its digits is 6912, while the sum is 33.

The square root of 128116662 is about 11318.8631054537. The cubic root of 128116662 is about 504.1214827465.

It can be divided in two parts, 128116 and 662, that added together give a triangular number (128778 = T₅₀₇).

The spelling of 128116662 in words is "one hundred twenty-eight million, one hundred sixteen thousand, six hundred sixty-two".