7322720 has 24 divisors (see below), whose sum is σ = 17300304. Its totient is φ = 2929024.

The previous prime is 7322683. The next prime is 7322743. The reversal of 7322720 is 272237.

7322720 = T₂₁₉ + T₂₂₀ + ... + T₃₇₈.

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 3 ways as a sum of consecutive naturals, for example, 22724 + ... + 23043.

It is an arithmetic number, because the mean of its divisors is an integer number (720846).

Almost surely, 2^7322720 is an apocalyptic number.

It is an amenable number.

7322720 is an abundant number, since it is smaller than the sum of its proper divisors (9977584).

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

7322720 is a wasteful number, since it uses less digits than its factorization.

7322720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45782 (or 45774 counting only the distinct ones).

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

The square root of 7322720 is about 2706.0524754705. The cubic root of 7322720 is about 194.1887842411.

Adding to 7322720 its reverse (272237), we get a palindrome (7594957).

The spelling of 7322720 in words is "seven million, three hundred twenty-two thousand, seven hundred twenty".