182215220 has 48 divisors (see below), whose sum is σ = 419126400. Its totient is φ = 65992320.

The previous prime is 182215217. The next prime is 182215237. The reversal of 182215220 is 22512281.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57641 + ... + 60719.

It is an arithmetic number, because the mean of its divisors is an integer number (8731800).

Almost surely, 2^182215220 is an apocalyptic number.

182215220 is a gapful number since it is divisible by the number (10) 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 182215220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209563200).

182215220 is an abundant number, since it is smaller than the sum of its proper divisors (236911180).

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

182215220 is a wasteful number, since it uses less digits than its factorization.

182215220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368 (or 3366 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 182215220 is about 13498.7117903895. The cubic root of 182215220 is about 566.9284042701.

The spelling of 182215220 in words is "one hundred eighty-two million, two hundred fifteen thousand, two hundred twenty".