7521680 has 40 divisors (see below), whose sum is σ = 17623872. Its totient is φ = 2985344.

The previous prime is 7521659. The next prime is 7521691. The reversal of 7521680 is 861257.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13079 + ... + 13641.

Almost surely, 2^7521680 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 7521680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8811936).

7521680 is an abundant number, since it is smaller than the sum of its proper divisors (10102192).

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

7521680 is a wasteful number, since it uses less digits than its factorization.

7521680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 7521680 is about 2742.5681395364. The cubic root of 7521680 is about 195.9318102371.

The spelling of 7521680 in words is "seven million, five hundred twenty-one thousand, six hundred eighty".