84728540 has 48 divisors (see below), whose sum is σ = 192384192. Its totient is φ = 31159296.

The previous prime is 84728519. The next prime is 84728569. The reversal of 84728540 is 4582748.

It is a junction number, because it is equal to n+sod(n) for n = 84728494 and 84728503.

It is a congruent number.

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, 87137 + ... + 88103.

It is an arithmetic number, because the mean of its divisors is an integer number (4008004).

Almost surely, 2^84728540 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 84728540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96192096).

84728540 is an abundant number, since it is smaller than the sum of its proper divisors (107655652).

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

84728540 is a wasteful number, since it uses less digits than its factorization.

84728540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 84728540 is about 9204.8106987596. The cubic root of 84728540 is about 439.2144039810.

The spelling of 84728540 in words is "eighty-four million, seven hundred twenty-eight thousand, five hundred forty".