7220545632 has 192 divisors, whose sum is σ = 21482496000. Its totient is φ = 2359010304.

The previous prime is 7220545627. The next prime is 7220545667. The reversal of 7220545632 is 2365450227.

7220545632 is a `hidden beast` number, since 72 + 20 + 5 + 4 + 563 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 31 ways as a sum of consecutive naturals, for example, 15073969 + ... + 15074447.

It is an arithmetic number, because the mean of its divisors is an integer number (111888000).

Almost surely, 2^7220545632 is an apocalyptic number.

7220545632 is a gapful number since it is divisible by the number (72) 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 7220545632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10741248000).

7220545632 is an abundant number, since it is smaller than the sum of its proper divisors (14261950368).

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

7220545632 is a wasteful number, since it uses less digits than its factorization.

7220545632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 7220545632 is about 84973.7937954991. The cubic root of 7220545632 is about 1932.8137461698.

Adding to 7220545632 its reverse (2365450227), we get a palindrome (9585995859).

The spelling of 7220545632 in words is "seven billion, two hundred twenty million, five hundred forty-five thousand, six hundred thirty-two".