128454832 has 40 divisors (see below), whose sum is σ = 272571840. Its totient is φ = 58159680.

The previous prime is 128454797. The next prime is 128454841. The reversal of 128454832 is 238454821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128454791 and 128454800.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48519 + ... + 51097.

It is an arithmetic number, because the mean of its divisors is an integer number (6814296).

Almost surely, 2^128454832 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 128454832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136285920).

128454832 is an abundant number, since it is smaller than the sum of its proper divisors (144117008).

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

128454832 is a wasteful number, since it uses less digits than its factorization.

128454832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881 (or 2875 counting only the distinct ones).

The product of its digits is 61440, while the sum is 37.

The square root of 128454832 is about 11333.7915985781. The cubic root of 128454832 is about 504.5646439069.

It can be divided in two parts, 128454 and 832, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 128454832 in words is "one hundred twenty-eight million, four hundred fifty-four thousand, eight hundred thirty-two".