128118536 has 96 divisors (see below), whose sum is σ = 311028480. Its totient is φ = 48988800.

The previous prime is 128118527. The next prime is 128118541. The reversal of 128118536 is 635811821.

It is a junction number, because it is equal to n+sod(n) for n = 128118496 and 128118505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157571 + ... + 158381.

It is an arithmetic number, because the mean of its divisors is an integer number (3239880).

Almost surely, 2^128118536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128118536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155514240).

128118536 is an abundant number, since it is smaller than the sum of its proper divisors (182909944).

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

128118536 is a wasteful number, since it uses less digits than its factorization.

128118536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 864 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 128118536 is about 11318.9458873165. The cubic root of 128118536 is about 504.1239407121.

The spelling of 128118536 in words is "one hundred twenty-eight million, one hundred eighteen thousand, five hundred thirty-six".