84684140 has 48 divisors (see below), whose sum is σ = 198223200. Its totient is φ = 30200832.

The previous prime is 84684109. The next prime is 84684167. The reversal of 84684140 is 4148648.

It is a self number, because there is not a number n which added to its sum of digits gives 84684140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95 + ... + 13014.

It is an arithmetic number, because the mean of its divisors is an integer number (4129650).

Almost surely, 2^84684140 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 84684140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99111600).

84684140 is an abundant number, since it is smaller than the sum of its proper divisors (113539060).

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

84684140 is a wasteful number, since it uses less digits than its factorization.

84684140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13154 (or 13152 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 84684140 is about 9202.3986003650. The cubic root of 84684140 is about 439.1376705809.

The spelling of 84684140 in words is "eighty-four million, six hundred eighty-four thousand, one hundred forty".