128894 has 12 divisors (see below), whose sum is σ = 206304. Its totient is φ = 60384.

The previous prime is 128879. The next prime is 128903. The reversal of 128894 is 498821.

It is a happy number.

It is a super-2 number, since 2×128894² = 33227326472, which contains 22 as substring.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 128894.

It is a congruent number.

It is an unprimeable number.

128894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 467 + ... + 689.

It is an arithmetic number, because the mean of its divisors is an integer number (17192).

2¹²⁸⁸⁹⁴ is an apocalyptic number.

128894 is a deficient number, since it is larger than the sum of its proper divisors (77410).

128894 is a wasteful number, since it uses less digits than its factorization.

128894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 242 counting only the distinct ones).

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

The square root of 128894 is about 359.0181053930. The cubic root of 128894 is about 50.5139000393.

The spelling of 128894 in words is "one hundred twenty-eight thousand, eight hundred ninety-four".