2370821220 has 72 divisors (see below), whose sum is σ = 7216195896. Its totient is φ = 630047232.

The previous prime is 2370821203. The next prime is 2370821221. The reversal of 2370821220 is 221280732.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1626186276 + 744634944 = 40326^2 + 27288^2 .

It is not an unprimeable number, because it can be changed into a prime (2370821221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30264 + ... + 75216.

It is an arithmetic number, because the mean of its divisors is an integer number (100224943).

Almost surely, 2^2370821220 is an apocalyptic number.

2370821220 is a gapful number since it is divisible by the number (20) 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 2370821220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3608097948).

2370821220 is an abundant number, since it is smaller than the sum of its proper divisors (4845374676).

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

2370821220 is a wasteful number, since it uses less digits than its factorization.

2370821220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45261 (or 45256 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2370821220 is about 48691.0794704738. The cubic root of 2370821220 is about 1333.4178622799.

The spelling of 2370821220 in words is "two billion, three hundred seventy million, eight hundred twenty-one thousand, two hundred twenty".