7913720 has 48 divisors (see below), whose sum is σ = 18399960. Its totient is φ = 3062976.

The previous prime is 7913701. The next prime is 7913749. The reversal of 7913720 is 273197.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 73907 + ... + 74013.

Almost surely, 2^7913720 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 7913720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9199980).

7913720 is an abundant number, since it is smaller than the sum of its proper divisors (10486240).

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

7913720 is a wasteful number, since it uses less digits than its factorization.

7913720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 7913720 is about 2813.1334842129. The cubic root of 7913720 is about 199.2783995955.

The spelling of 7913720 in words is "seven million, nine hundred thirteen thousand, seven hundred twenty".