2172520224 has 192 divisors, whose sum is σ = 7335014400. Its totient is φ = 612728064.

The previous prime is 2172520199. The next prime is 2172520247. The reversal of 2172520224 is 4220252712.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 475519 + ... + 480065.

It is an arithmetic number, because the mean of its divisors is an integer number (38203200).

Almost surely, 2^2172520224 is an apocalyptic number.

2172520224 is a gapful number since it is divisible by the number (24) 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 2172520224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3667507200).

2172520224 is an abundant number, since it is smaller than the sum of its proper divisors (5162494176).

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

2172520224 is a wasteful number, since it uses less digits than its factorization.

2172520224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652 (or 4638 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 2172520224 is about 46610.3016939389. The cubic root of 2172520224 is about 1295.1535968638.

Adding to 2172520224 its reverse (4220252712), we get a palindrome (6392772936).

The spelling of 2172520224 in words is "two billion, one hundred seventy-two million, five hundred twenty thousand, two hundred twenty-four".