7313920 has 40 divisors (see below), whose sum is σ = 17542404. Its totient is φ = 2924544.

The previous prime is 7313903. The next prime is 7313951. The reversal of 7313920 is 293137.

It can be written as a sum of positive squares in 2 ways, for example, as 7311616 + 2304 = 2704^2 + 48^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 1132 + ... + 3988.

Almost surely, 2^7313920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7313920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8771202).

7313920 is an abundant number, since it is smaller than the sum of its proper divisors (10228484).

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

7313920 is an equidigital number, since it uses as much as digits as its factorization.

7313920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 7313920 is about 2704.4260019457. The cubic root of 7313920 is about 194.1109649656.

The spelling of 7313920 in words is "seven million, three hundred thirteen thousand, nine hundred twenty".