7220535132 has 48 divisors (see below), whose sum is σ = 16990348032. Its totient is φ = 2386538880.

The previous prime is 7220535131. The next prime is 7220535167. The reversal of 7220535132 is 2315350227.

It is a happy number.

It is a super-2 number, since 2×7220535132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7220535132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220535131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1844257 + ... + 1848167.

It is an arithmetic number, because the mean of its divisors is an integer number (353965584).

Almost surely, 2^7220535132 is an apocalyptic number.

It is an amenable number.

7220535132 is an abundant number, since it is smaller than the sum of its proper divisors (9769812900).

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

7220535132 is a wasteful number, since it uses less digits than its factorization.

7220535132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178 (or 5176 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 7220535132 is about 84973.7320117223. The cubic root of 7220535132 is about 1932.8128092805.

Adding to 7220535132 its reverse (2315350227), we get a palindrome (9535885359).

The spelling of 7220535132 in words is "seven billion, two hundred twenty million, five hundred thirty-five thousand, one hundred thirty-two".