84432840 has 64 divisors (see below), whose sum is σ = 261480960. Its totient is φ = 21788160.

The previous prime is 84432811. The next prime is 84432841. The reversal of 84432840 is 4823448.

It is not an unprimeable number, because it can be changed into a prime (84432841) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7629 + ... + 15068.

It is an arithmetic number, because the mean of its divisors is an integer number (4085640).

Almost surely, 2^84432840 is an apocalyptic number.

It is an amenable number.

84432840 is an abundant number, since it is smaller than the sum of its proper divisors (177048120).

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

84432840 is a wasteful number, since it uses less digits than its factorization.

84432840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22742 (or 22738 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 84432840 is about 9188.7344068702. The cubic root of 84432840 is about 438.7028601719.

The spelling of 84432840 in words is "eighty-four million, four hundred thirty-two thousand, eight hundred forty".