128498 has 8 divisors (see below), whose sum is σ = 196992. Its totient is φ = 62836.

The previous prime is 128489. The next prime is 128509. The reversal of 128498 is 894821.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 777.

It is an arithmetic number, because the mean of its divisors is an integer number (24624).

2¹²⁸⁴⁹⁸ is an apocalyptic number.

128498 is a deficient number, since it is larger than the sum of its proper divisors (68494).

128498 is a wasteful number, since it uses less digits than its factorization.

128498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its digits is 4608, while the sum is 32.

The square root of 128498 is about 358.4661769261. The cubic root of 128498 is about 50.4621158213.

It can be divided in two parts, 128 and 498, that added together give a palindrome (626).

The spelling of 128498 in words is "one hundred twenty-eight thousand, four hundred ninety-eight".