84784020 has 96 divisors (see below), whose sum is σ = 246320256. Its totient is φ = 21772800.

The previous prime is 84783991. The next prime is 84784079. The reversal of 84784020 is 2048748.

It is a congruent number.

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, 401715 + ... + 401925.

It is an arithmetic number, because the mean of its divisors is an integer number (2565836).

Almost surely, 2^84784020 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 84784020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123160128).

84784020 is an abundant number, since it is smaller than the sum of its proper divisors (161536236).

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

84784020 is a wasteful number, since it uses less digits than its factorization.

84784020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 84784020 is about 9207.8238471422. The cubic root of 84784020 is about 439.3102484999.

The spelling of 84784020 in words is "eighty-four million, seven hundred eighty-four thousand, twenty".