7220732 has 12 divisors (see below), whose sum is σ = 12930456. Its totient is φ = 3526320.

The previous prime is 7220729. The next prime is 7220743. The reversal of 7220732 is 2370227.

It is a junction number, because it is equal to n+sod(n) for n = 7220698 and 7220707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20819 + ... + 21162.

It is an arithmetic number, because the mean of its divisors is an integer number (1077538).

Almost surely, 2^7220732 is an apocalyptic number.

It is an amenable number.

7220732 is a deficient number, since it is larger than the sum of its proper divisors (5709724).

7220732 is a wasteful number, since it uses less digits than its factorization.

7220732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42028 (or 42026 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 7220732 is about 2687.1419761524. The cubic root of 7220732 is about 193.2830375178.

Adding to 7220732 its reverse (2370227), we get a palindrome (9590959).

The spelling of 7220732 in words is "seven million, two hundred twenty thousand, seven hundred thirty-two".