7791120 has 80 divisors (see below), whose sum is σ = 26843520. Its totient is φ = 2077056.

The previous prime is 7791109. The next prime is 7791139. The reversal of 7791120 is 211977.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (335544).

Almost surely, 2^7791120 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 7791120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13421760).

7791120 is an abundant number, since it is smaller than the sum of its proper divisors (19052400).

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

7791120 is a wasteful number, since it uses less digits than its factorization.

7791120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 7791120 is about 2791.2577810012. The cubic root of 7791120 is about 198.2439600778.

The spelling of 7791120 in words is "seven million, seven hundred ninety-one thousand, one hundred twenty".