2021323460 has 96 divisors (see below), whose sum is σ = 4863771360. Its totient is φ = 699015168.

The previous prime is 2021323457. The next prime is 2021323471. The reversal of 2021323460 is 643231202.

It can be written as a sum of positive squares in 16 ways, for example, as 578691136 + 1442632324 = 24056^2 + 37982^2 .

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1011182 + ... + 1013178.

It is an arithmetic number, because the mean of its divisors is an integer number (50664285).

Almost surely, 2^2021323460 is an apocalyptic number.

2021323460 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 2021323460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2431885680).

2021323460 is an abundant number, since it is smaller than the sum of its proper divisors (2842447900).

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

2021323460 is a wasteful number, since it uses less digits than its factorization.

2021323460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265 (or 2263 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2021323460 is about 44959.1309969399. The cubic root of 2021323460 is about 1264.3828763541.

Adding to 2021323460 its reverse (643231202), we get a palindrome (2664554662).

The spelling of 2021323460 in words is "two billion, twenty-one million, three hundred twenty-three thousand, four hundred sixty".