7424721632 has 48 divisors (see below), whose sum is σ = 15292761120. Its totient is φ = 3541688832.

The previous prime is 7424721631. The next prime is 7424721649. The reversal of 7424721632 is 2361274247.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7424721631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273338 + ... + 299270.

It is an arithmetic number, because the mean of its divisors is an integer number (318599190).

Almost surely, 2^7424721632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7424721632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7646380560).

7424721632 is an abundant number, since it is smaller than the sum of its proper divisors (7868039488).

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

7424721632 is a wasteful number, since it uses less digits than its factorization.

7424721632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26355 (or 26347 counting only the distinct ones).

The product of its digits is 112896, while the sum is 38.

The square root of 7424721632 is about 86166.8244279665. The cubic root of 7424721632 is about 1950.8627899697.

Adding to 7424721632 its reverse (2361274247), we get a palindrome (9785995879).

The spelling of 7424721632 in words is "seven billion, four hundred twenty-four million, seven hundred twenty-one thousand, six hundred thirty-two".