84020712 has 16 divisors (see below), whose sum is σ = 210051840. Its totient is φ = 28006896.

The previous prime is 84020711. The next prime is 84020723. The reversal of 84020712 is 21702048.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 3500863 = 84020712 / (8 + 4 + 0 + 2 + 0 + 7 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (84020711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750408 + ... + 1750455.

It is an arithmetic number, because the mean of its divisors is an integer number (13128240).

Almost surely, 2^84020712 is an apocalyptic number.

It is an amenable number.

84020712 is an abundant number, since it is smaller than the sum of its proper divisors (126031128).

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

84020712 is a wasteful number, since it uses less digits than its factorization.

84020712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500872 (or 3500868 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 84020712 is about 9166.2812525037. The cubic root of 84020712 is about 437.9879065071.

The spelling of 84020712 in words is "eighty-four million, twenty thousand, seven hundred twelve".