7321560 has 128 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 1769472.

The previous prime is 7321541. The next prime is 7321583. The reversal of 7321560 is 651237.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 7321560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75432 + ... + 75528.

Almost surely, 2^7321560 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 7321560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12065760).

7321560 is an abundant number, since it is smaller than the sum of its proper divisors (16809960).

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

7321560 is a wasteful number, since it uses less digits than its factorization.

7321560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 7321560 is about 2705.8381326310. The cubic root of 7321560 is about 194.1785298144.

Adding to 7321560 its reverse (651237), we get a palindrome (7972797).

The spelling of 7321560 in words is "seven million, three hundred twenty-one thousand, five hundred sixty".