128962 has 8 divisors (see below), whose sum is σ = 204876. Its totient is φ = 60672.

The previous prime is 128959. The next prime is 128969. The reversal of 128962 is 269821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128881 + 81 = 359^2 + 9^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 1 + 2¹² + 9⁵ + 8² + 6³ + 2¹⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 128962.

It is not an unprimeable number, because it can be changed into a prime (128969) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1863 + ... + 1930.

2¹²⁸⁹⁶² is an apocalyptic number.

128962 is a deficient number, since it is larger than the sum of its proper divisors (75914).

128962 is a wasteful number, since it uses less digits than its factorization.

128962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812.

The product of its digits is 1728, while the sum is 28.

The square root of 128962 is about 359.1127956506. The cubic root of 128962 is about 50.5227816043.

The spelling of 128962 in words is "one hundred twenty-eight thousand, nine hundred sixty-two".