2305221732 has 72 divisors (see below), whose sum is σ = 6403374432. Its totient is φ = 693436800.

The previous prime is 2305221727. The next prime is 2305221739. The reversal of 2305221732 is 2371225032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2305221696 and 2305221705.

It is not an unprimeable number, because it can be changed into a prime (2305221739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33007 + ... + 75497.

It is an arithmetic number, because the mean of its divisors is an integer number (88935756).

Almost surely, 2^2305221732 is an apocalyptic number.

2305221732 is a gapful number since it is divisible by the number (22) 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 2305221732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3201687216).

2305221732 is an abundant number, since it is smaller than the sum of its proper divisors (4098152700).

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

2305221732 is a wasteful number, since it uses less digits than its factorization.

2305221732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42649 (or 42644 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 2305221732 is about 48012.7246883574. The cubic root of 2305221732 is about 1321.0043114415.

Adding to 2305221732 its reverse (2371225032), we get a palindrome (4676446764).

The spelling of 2305221732 in words is "two billion, three hundred five million, two hundred twenty-one thousand, seven hundred thirty-two".