128436882 has 32 divisors (see below), whose sum is σ = 303696000. Its totient is φ = 35430528.

The previous prime is 128436881. The next prime is 128436883. The reversal of 128436882 is 288634821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128436881) and next prime (128436883).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (128436881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51507 + ... + 53942.

It is an arithmetic number, because the mean of its divisors is an integer number (9490500).

Almost surely, 2^128436882 is an apocalyptic number.

128436882 is an abundant number, since it is smaller than the sum of its proper divisors (175259118).

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

128436882 is a wasteful number, since it uses less digits than its factorization.

128436882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105490.

The product of its digits is 147456, while the sum is 42.

The square root of 128436882 is about 11332.9996911674. Note that the first 3 decimals coincide. The cubic root of 128436882 is about 504.5411405553.

The spelling of 128436882 in words is "one hundred twenty-eight million, four hundred thirty-six thousand, eight hundred eighty-two".