128452398 has 8 divisors (see below), whose sum is σ = 256904808. Its totient is φ = 42817464.

The previous prime is 128452367. The next prime is 128452403. The reversal of 128452398 is 893254821.

It is a sphenic number, since it is the product of 3 distinct primes.

128452398 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10704361 + ... + 10704372.

It is an arithmetic number, because the mean of its divisors is an integer number (32113101).

Almost surely, 2^128452398 is an apocalyptic number.

128452398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128452398 is a wasteful number, since it uses less digits than its factorization.

128452398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21408738.

The product of its digits is 138240, while the sum is 42.

The square root of 128452398 is about 11333.6842200584. The cubic root of 128452398 is about 504.5614570070.

The spelling of 128452398 in words is "one hundred twenty-eight million, four hundred fifty-two thousand, three hundred ninety-eight".