84128236 has 6 divisors (see below), whose sum is σ = 147224420. Its totient is φ = 42064116.

The previous prime is 84128173. The next prime is 84128249. The reversal of 84128236 is 63282148.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10516026 + ... + 10516033.

Almost surely, 2^84128236 is an apocalyptic number.

It is an amenable number.

84128236 is a deficient number, since it is larger than the sum of its proper divisors (63096184).

84128236 is a wasteful number, since it uses less digits than its factorization.

84128236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032063 (or 21032061 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 84128236 is about 9172.1445692924. The cubic root of 84128236 is about 438.1746625877.

The spelling of 84128236 in words is "eighty-four million, one hundred twenty-eight thousand, two hundred thirty-six".