128391088 has 40 divisors (see below), whose sum is σ = 293473280. Its totient is φ = 53248320.

The previous prime is 128391079. The next prime is 128391097. The reversal of 128391088 is 880193821.

It is an interprime number because it is at equal distance from previous prime (128391079) and next prime (128391097).

It is a self number, because there is not a number n which added to its sum of digits gives 128391088.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15018 + ... + 21961.

It is an arithmetic number, because the mean of its divisors is an integer number (7336832).

Almost surely, 2^128391088 is an apocalyptic number.

It is an amenable number.

128391088 is an abundant number, since it is smaller than the sum of its proper divisors (165082192).

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

128391088 is a wasteful number, since it uses less digits than its factorization.

128391088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37025 (or 37019 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 128391088 is about 11330.9791280366. The cubic root of 128391088 is about 504.4811689356.

The spelling of 128391088 in words is "one hundred twenty-eight million, three hundred ninety-one thousand, eighty-eight".