128746632 has 64 divisors (see below), whose sum is σ = 369792000. Its totient is φ = 36590400.

The previous prime is 128746621. The next prime is 128746649. The reversal of 128746632 is 236647821.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31507 + ... + 35357.

It is an arithmetic number, because the mean of its divisors is an integer number (5778000).

Almost surely, 2^128746632 is an apocalyptic number.

128746632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128746632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184896000).

128746632 is an abundant number, since it is smaller than the sum of its proper divisors (241045368).

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

128746632 is a wasteful number, since it uses less digits than its factorization.

128746632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066 (or 4062 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 128746632 is about 11346.6573051274. The cubic root of 128746632 is about 504.9464139462.

The spelling of 128746632 in words is "one hundred twenty-eight million, seven hundred forty-six thousand, six hundred thirty-two".