128315472 has 40 divisors (see below), whose sum is σ = 333612576. Its totient is φ = 42496896.

The previous prime is 128315449. The next prime is 128315477. The reversal of 128315472 is 274513821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128315477) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 978 + ... + 16049.

Almost surely, 2^128315472 is an apocalyptic number.

128315472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128315472 is an abundant number, since it is smaller than the sum of its proper divisors (205297104).

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

128315472 is a wasteful number, since it uses less digits than its factorization.

128315472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17195 (or 17189 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 128315472 is about 11327.6419434938. The cubic root of 128315472 is about 504.3821113348.

The spelling of 128315472 in words is "one hundred twenty-eight million, three hundred fifteen thousand, four hundred seventy-two".