128389368 has 32 divisors (see below), whose sum is σ = 328804560. Its totient is φ = 41752320.

The previous prime is 128389367. The next prime is 128389439. The reversal of 128389368 is 863983821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128389363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64255 + ... + 66222.

Almost surely, 2^128389368 is an apocalyptic number.

It is an amenable number.

128389368 is an abundant number, since it is smaller than the sum of its proper divisors (200415192).

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

128389368 is a wasteful number, since it uses less digits than its factorization.

128389368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130527 (or 130523 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 128389368 is about 11330.9032296636. The cubic root of 128389368 is about 504.4789161533.

The spelling of 128389368 in words is "one hundred twenty-eight million, three hundred eighty-nine thousand, three hundred sixty-eight".