128335552 has 42 divisors (see below), whose sum is σ = 259969508. Its totient is φ = 62844672.

The previous prime is 128335541. The next prime is 128335577. The reversal of 128335552 is 255533821.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 741738 + ... + 741910.

Almost surely, 2^128335552 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 128335552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129984754).

128335552 is an abundant number, since it is smaller than the sum of its proper divisors (131633956).

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

128335552 is an frugal number, since it uses more digits than its factorization.

128335552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 242 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 128335552 is about 11328.5282362715. The cubic root of 128335552 is about 504.4084200992.

The spelling of 128335552 in words is "one hundred twenty-eight million, three hundred thirty-five thousand, five hundred fifty-two".