128480 has 48 divisors (see below), whose sum is σ = 335664. Its totient is φ = 46080.

The previous prime is 128477. The next prime is 128483. The reversal of 128480 is 84821.

It is an interprime number because it is at equal distance from previous prime (128477) and next prime (128483).

It is a super-2 number, since 2×128480² = 33014220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128483) 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, 1724 + ... + 1796.

It is an arithmetic number, because the mean of its divisors is an integer number (6993).

2¹²⁸⁴⁸⁰ is an apocalyptic number.

128480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167832).

128480 is an abundant number, since it is smaller than the sum of its proper divisors (207184).

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

128480 is a wasteful number, since it uses less digits than its factorization.

128480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 128480 is about 358.4410690755. The cubic root of 128480 is about 50.4597594669.

The spelling of 128480 in words is "one hundred twenty-eight thousand, four hundred eighty".