84019740 has 96 divisors (see below), whose sum is σ = 270273024. Its totient is φ = 19104000.

The previous prime is 84019723. The next prime is 84019777. The reversal of 84019740 is 4791048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105022 + ... + 105818.

It is an arithmetic number, because the mean of its divisors is an integer number (2815344).

Almost surely, 2^84019740 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 84019740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135136512).

84019740 is an abundant number, since it is smaller than the sum of its proper divisors (186253284).

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

84019740 is a wasteful number, since it uses less digits than its factorization.

84019740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 84019740 is about 9166.2282319392. The cubic root of 84019740 is about 437.9862175351.

The spelling of 84019740 in words is "eighty-four million, nineteen thousand, seven hundred forty".