128641488 has 20 divisors (see below), whose sum is σ = 332323968. Its totient is φ = 42880480.

The previous prime is 128641483. The next prime is 128641501. The reversal of 128641488 is 884146821.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128641481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1339968 + ... + 1340063.

Almost surely, 2^128641488 is an apocalyptic number.

It is an amenable number.

128641488 is an abundant number, since it is smaller than the sum of its proper divisors (203682480).

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

128641488 is a wasteful number, since it uses less digits than its factorization.

128641488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680042 (or 2680036 counting only the distinct ones).

The product of its digits is 98304, while the sum is 42.

The square root of 128641488 is about 11342.0230999588. The cubic root of 128641488 is about 504.8089176755.

The spelling of 128641488 in words is "one hundred twenty-eight million, six hundred forty-one thousand, four hundred eighty-eight".