128486 has 8 divisors (see below), whose sum is σ = 204120. Its totient is φ = 60448.

The previous prime is 128483. The next prime is 128489. The reversal of 128486 is 684821.

It is an interprime number because it is at equal distance from previous prime (128483) and next prime (128489).

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

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 3 ways as a sum of consecutive naturals, for example, 1856 + ... + 1923.

It is an arithmetic number, because the mean of its divisors is an integer number (25515).

2¹²⁸⁴⁸⁶ is an apocalyptic number.

128486 is a deficient number, since it is larger than the sum of its proper divisors (75634).

128486 is a wasteful number, since it uses less digits than its factorization.

128486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798.

The product of its digits is 3072, while the sum is 29.

The square root of 128486 is about 358.4494385544. The cubic root of 128486 is about 50.4605449428.

The spelling of 128486 in words is "one hundred twenty-eight thousand, four hundred eighty-six".