128562 has 16 divisors (see below), whose sum is σ = 293952. Its totient is φ = 36720.

The previous prime is 128551. The next prime is 128563. The reversal of 128562 is 265821.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (128563) by changing a digit.

128562 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1489 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (18372).

2¹²⁸⁵⁶² is an apocalyptic number.

128562 is an abundant number, since it is smaller than the sum of its proper divisors (165390).

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

128562 is a wasteful number, since it uses less digits than its factorization.

128562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its digits is 960, while the sum is 24.

The square root of 128562 is about 358.5554350446. Note that the first 3 decimals coincide. The cubic root of 128562 is about 50.4704921887.

The spelling of 128562 in words is "one hundred twenty-eight thousand, five hundred sixty-two".