128715488 has 24 divisors (see below), whose sum is σ = 276446520. Its totient is φ = 58506880.

The previous prime is 128715467. The next prime is 128715493. The reversal of 128715488 is 884517821.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182483 + ... + 183186.

It is an arithmetic number, because the mean of its divisors is an integer number (11518605).

Almost surely, 2^128715488 is an apocalyptic number.

It is an amenable number.

128715488 is an abundant number, since it is smaller than the sum of its proper divisors (147731032).

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

128715488 is a wasteful number, since it uses less digits than its factorization.

128715488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365690 (or 365682 counting only the distinct ones).

The product of its digits is 143360, while the sum is 44.

The square root of 128715488 is about 11345.2848355605. The cubic root of 128715488 is about 504.9056949021.

The spelling of 128715488 in words is "one hundred twenty-eight million, seven hundred fifteen thousand, four hundred eighty-eight".