84281128 has 32 divisors (see below), whose sum is σ = 161078760. Its totient is φ = 41333760.

The previous prime is 84281123. The next prime is 84281149. The reversal of 84281128 is 82118248.

It can be written as a sum of positive squares in 4 ways, for example, as 53611684 + 30669444 = 7322^2 + 5538^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 84281093 and 84281102.

It is not an unprimeable number, because it can be changed into a prime (84281123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161508 + ... + 162028.

Almost surely, 2^84281128 is an apocalyptic number.

It is an amenable number.

84281128 is a deficient number, since it is larger than the sum of its proper divisors (76797632).

84281128 is a wasteful number, since it uses less digits than its factorization.

84281128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 873 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 84281128 is about 9180.4753689556. The cubic root of 84281128 is about 438.4399435474.

The spelling of 84281128 in words is "eighty-four million, two hundred eighty-one thousand, one hundred twenty-eight".