84867240 has 128 divisors (see below), whose sum is σ = 269256960. Its totient is φ = 21356544.

The previous prime is 84867203. The next prime is 84867313. The reversal of 84867240 is 4276848.

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 in 31 ways as a sum of consecutive naturals, for example, 267562 + ... + 267878.

It is an arithmetic number, because the mean of its divisors is an integer number (2103570).

Almost surely, 2^84867240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84867240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134628480).

84867240 is an abundant number, since it is smaller than the sum of its proper divisors (184389720).

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

84867240 is a wasteful number, since it uses less digits than its factorization.

84867240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 84867240 is about 9212.3417218425. The cubic root of 84867240 is about 439.4539369125.

The spelling of 84867240 in words is "eighty-four million, eight hundred sixty-seven thousand, two hundred forty".