128181748 has 12 divisors (see below), whose sum is σ = 228120480. Its totient is φ = 63004472.

The previous prime is 128181743. The next prime is 128181763. The reversal of 128181748 is 847181821.

It is a self number, because there is not a number n which added to its sum of digits gives 128181748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128181743) 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 3 ways as a sum of consecutive naturals, for example, 271336 + ... + 271807.

It is an arithmetic number, because the mean of its divisors is an integer number (19010040).

Almost surely, 2^128181748 is an apocalyptic number.

It is an amenable number.

128181748 is a deficient number, since it is larger than the sum of its proper divisors (99938732).

128181748 is a wasteful number, since it uses less digits than its factorization.

128181748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543206 (or 543204 counting only the distinct ones).

The product of its digits is 28672, while the sum is 40.

The square root of 128181748 is about 11321.7378524677. The cubic root of 128181748 is about 504.2068364536.

The spelling of 128181748 in words is "one hundred twenty-eight million, one hundred eighty-one thousand, seven hundred forty-eight".