128976 has 20 divisors (see below), whose sum is σ = 333312. Its totient is φ = 42976.

The previous prime is 128971. The next prime is 128981. The reversal of 128976 is 679821.

It is an interprime number because it is at equal distance from previous prime (128971) and next prime (128981).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128971) 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, 1296 + ... + 1391.

2¹²⁸⁹⁷⁶ is an apocalyptic number.

128976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128976 is an abundant number, since it is smaller than the sum of its proper divisors (204336).

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

128976 is a wasteful number, since it uses less digits than its factorization.

128976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698 (or 2692 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 128976 is about 359.1322876044. The cubic root of 128976 is about 50.5246097743.

The spelling of 128976 in words is "one hundred twenty-eight thousand, nine hundred seventy-six".