7181120 has 28 divisors (see below), whose sum is σ = 17100804. Its totient is φ = 2872320.

The previous prime is 7181113. The next prime is 7181131. The reversal of 7181120 is 211817.

It can be written as a sum of positive squares in 2 ways, for example, as 1149184 + 6031936 = 1072^2 + 2456^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

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 = 7181092 and 7181101.

It is a congruent number.

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, 10901 + ... + 11540.

It is an arithmetic number, because the mean of its divisors is an integer number (610743).

Almost surely, 2^7181120 is an apocalyptic number.

It is an amenable number.

7181120 is an abundant number, since it is smaller than the sum of its proper divisors (9919684).

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

7181120 is a wasteful number, since it uses less digits than its factorization.

7181120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22458 (or 22448 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 7181120 is about 2679.7611833893. The cubic root of 7181120 is about 192.9289473300.

Adding to 7181120 its reverse (211817), we get a palindrome (7392937).

The spelling of 7181120 in words is "seven million, one hundred eighty-one thousand, one hundred twenty".