84240036 has 18 divisors (see below), whose sum is σ = 212940182. Its totient is φ = 28080000.

The previous prime is 84240011. The next prime is 84240059. The reversal of 84240036 is 63004248.

It can be written as a sum of positive squares in only one way, i.e., 80460900 + 3779136 = 8970^2 + 1944^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 84239991 and 84240009.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1169965 + ... + 1170036.

Almost surely, 2^84240036 is an apocalyptic number.

It is an amenable number.

84240036 is an abundant number, since it is smaller than the sum of its proper divisors (128700146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84240036 is a wasteful number, since it uses less digits than its factorization.

84240036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340011 (or 2340006 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 84240036 is about 9178.2370856282. The cubic root of 84240036 is about 438.3686768894.

The spelling of 84240036 in words is "eighty-four million, two hundred forty thousand, thirty-six".