128988592 has 10 divisors (see below), whose sum is σ = 249915428. Its totient is φ = 64494288.

The previous prime is 128988581. The next prime is 128988599. The reversal of 128988592 is 295889821.

It is a super-2 number, since 2×128988592² = 33276113732284928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128988599) 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 as a sum of consecutive naturals, namely, 4030878 + ... + 4030909.

Almost surely, 2^128988592 is an apocalyptic number.

It is an amenable number.

128988592 is a deficient number, since it is larger than the sum of its proper divisors (120926836).

128988592 is an equidigital number, since it uses as much as digits as its factorization.

128988592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061795 (or 8061789 counting only the distinct ones).

The product of its digits is 829440, while the sum is 52.

The square root of 128988592 is about 11357.3144713000. The cubic root of 128988592 is about 505.2625396953.

The spelling of 128988592 in words is "one hundred twenty-eight million, nine hundred eighty-eight thousand, five hundred ninety-two".