7200920 has 16 divisors (see below), whose sum is σ = 16202160. Its totient is φ = 2880352.

The previous prime is 7200913. The next prime is 7200923. The reversal of 7200920 is 290027.

7200920 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 7200892 and 7200901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7200923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89972 + ... + 90051.

It is an arithmetic number, because the mean of its divisors is an integer number (1012635).

Almost surely, 2^7200920 is an apocalyptic number.

It is an amenable number.

7200920 is an abundant number, since it is smaller than the sum of its proper divisors (9001240).

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

7200920 is a wasteful number, since it uses less digits than its factorization.

7200920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180034 (or 180030 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 7200920 is about 2683.4529994021. The cubic root of 7200920 is about 193.1061011100.

Adding to 7200920 its reverse (290027), we get a palindrome (7490947).

The spelling of 7200920 in words is "seven million, two hundred thousand, nine hundred twenty".