128472 has 32 divisors (see below), whose sum is σ = 330480. Its totient is φ = 41600.

The previous prime is 128467. The next prime is 128473. The reversal of 128472 is 274821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128473) by changing a digit.

128472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222 + ... + 1322.

2¹²⁸⁴⁷² is an apocalyptic number.

128472 is a gapful number since it is divisible by the number (12) 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 128472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165240).

128472 is an abundant number, since it is smaller than the sum of its proper divisors (202008).

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

128472 is a wasteful number, since it uses less digits than its factorization.

128472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 159 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 128472 is about 358.4299094663. The cubic root of 128472 is about 50.4587121276.

The spelling of 128472 in words is "one hundred twenty-eight thousand, four hundred seventy-two".