84584240 has 40 divisors (see below), whose sum is σ = 211788528. Its totient is φ = 31230720.

The previous prime is 84584209. The next prime is 84584261. The reversal of 84584240 is 4248548.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 84584240.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 39626 + ... + 41705.

Almost surely, 2^84584240 is an apocalyptic number.

84584240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84584240 is an abundant number, since it is smaller than the sum of its proper divisors (127204288).

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

84584240 is a wasteful number, since it uses less digits than its factorization.

84584240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81357 (or 81351 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 84584240 is about 9196.9690659478. The cubic root of 84584240 is about 438.9649223135.

The spelling of 84584240 in words is "eighty-four million, five hundred eighty-four thousand, two hundred forty".