128616832 has 32 divisors (see below), whose sum is σ = 271305720. Its totient is φ = 60524544.

The previous prime is 128616823. The next prime is 128616869. The reversal of 128616832 is 238616821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 128616791 and 128616800.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 27378 + ... + 31729.

Almost surely, 2^128616832 is an apocalyptic number.

It is an amenable number.

128616832 is an abundant number, since it is smaller than the sum of its proper divisors (142688888).

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

128616832 is an equidigital number, since it uses as much as digits as its factorization.

128616832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59138 (or 59126 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 128616832 is about 11340.9361165646. The cubic root of 128616832 is about 504.7766643070.

The spelling of 128616832 in words is "one hundred twenty-eight million, six hundred sixteen thousand, eight hundred thirty-two".