128974 has 8 divisors (see below), whose sum is σ = 196920. Its totient is φ = 63336.

The previous prime is 128971. The next prime is 128981. The reversal of 128974 is 479821.

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

It is a plaindrome in base 11.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429 + ... + 664.

It is an arithmetic number, because the mean of its divisors is an integer number (24615).

2¹²⁸⁹⁷⁴ is an apocalyptic number.

128974 is a deficient number, since it is larger than the sum of its proper divisors (67946).

128974 is a wasteful number, since it uses less digits than its factorization.

128974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154.

The product of its digits is 4032, while the sum is 31.

The square root of 128974 is about 359.1295031044. The cubic root of 128974 is about 50.5243486152.

The spelling of 128974 in words is "one hundred twenty-eight thousand, nine hundred seventy-four".