84221480 has 64 divisors (see below), whose sum is σ = 220164480. Its totient is φ = 28396800.

The previous prime is 84221453. The next prime is 84221483. The reversal of 84221480 is 8412248.

It is not an unprimeable number, because it can be changed into a prime (84221483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14615 + ... + 19545.

It is an arithmetic number, because the mean of its divisors is an integer number (3440070).

Almost surely, 2^84221480 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 84221480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110082240).

84221480 is an abundant number, since it is smaller than the sum of its proper divisors (135943000).

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

84221480 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (84221479) it forms an eRAP, since the sums of their prime factors are consecutive (5009 and 5010).

84221480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 84221480 is about 9177.2261604474. The cubic root of 84221480 is about 438.3364872605.

It can be divided in two parts, 842 and 21480, that added together give a palindrome (22322).

The spelling of 84221480 in words is "eighty-four million, two hundred twenty-one thousand, four hundred eighty".