84522240 has 432 divisors, whose sum is σ = 344373120. Its totient is φ = 18923520.

The previous prime is 84522239. The next prime is 84522281. The reversal of 84522240 is 4222548.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2914546 + ... + 2914574.

It is an arithmetic number, because the mean of its divisors is an integer number (797160).

Almost surely, 2^84522240 is an apocalyptic number.

84522240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172186560).

84522240 is an abundant number, since it is smaller than the sum of its proper divisors (259850880).

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

84522240 is a wasteful number, since it uses less digits than its factorization.

84522240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 84522240 is about 9193.5977723631. The cubic root of 84522240 is about 438.8576427636.

Adding to 84522240 its reverse (4222548), we get a palindrome (88744788).

The spelling of 84522240 in words is "eighty-four million, five hundred twenty-two thousand, two hundred forty".