7161320 has 16 divisors (see below), whose sum is σ = 16113060. Its totient is φ = 2864512.

The previous prime is 7161317. The next prime is 7161331. The reversal of 7161320 is 231617.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7086244 + 75076 = 2662^2 + 274^2 .

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 = 7161292 and 7161301.

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, 89477 + ... + 89556.

Almost surely, 2^7161320 is an apocalyptic number.

It is an amenable number.

7161320 is an abundant number, since it is smaller than the sum of its proper divisors (8951740).

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

7161320 is a wasteful number, since it uses less digits than its factorization.

7161320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179044 (or 179040 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 7161320 is about 2676.0642742655. The cubic root of 7161320 is about 192.7514676142.

Adding to 7161320 its reverse (231617), we get a palindrome (7392937).

The spelling of 7161320 in words is "seven million, one hundred sixty-one thousand, three hundred twenty".