128284028 has 18 divisors (see below), whose sum is σ = 226772784. Its totient is φ = 63498264.

The previous prime is 128284027. The next prime is 128284033. The reversal of 128284028 is 820482821.

It is a super-3 number, since 3×128284028³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128284027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40925 + ... + 43947.

It is an arithmetic number, because the mean of its divisors is an integer number (12598488).

Almost surely, 2^128284028 is an apocalyptic number.

It is an amenable number.

128284028 is a deficient number, since it is larger than the sum of its proper divisors (98488756).

128284028 is a wasteful number, since it uses less digits than its factorization.

128284028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233 (or 3128 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 128284028 is about 11326.2539261664. The cubic root of 128284028 is about 504.3409079722.

The spelling of 128284028 in words is "one hundred twenty-eight million, two hundred eighty-four thousand, twenty-eight".