128862 has 12 divisors (see below), whose sum is σ = 279240. Its totient is φ = 42948.

The previous prime is 128861. The next prime is 128873. The reversal of 128862 is 268821.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3562 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (23270).

2¹²⁸⁸⁶² is an apocalyptic number.

128862 is an abundant number, since it is smaller than the sum of its proper divisors (150378).

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

128862 is a wasteful number, since it uses less digits than its factorization.

128862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167 (or 7164 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 128862 is about 358.9735366291. The cubic root of 128862 is about 50.5097193984.

It can be divided in two parts, 128 and 862, that added together give a triangular number (990 = T₄₄).

The spelling of 128862 in words is "one hundred twenty-eight thousand, eight hundred sixty-two".