7208640 has 84 divisors (see below), whose sum is σ = 24804624. Its totient is φ = 1921536.

The previous prime is 7208627. The next prime is 7208653. The reversal of 7208640 is 468027.

It is an interprime number because it is at equal distance from previous prime (7208627) and next prime (7208653).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1629 + ... + 4131.

Almost surely, 2^7208640 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 7208640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12402312).

7208640 is an abundant number, since it is smaller than the sum of its proper divisors (17595984).

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

7208640 is a wasteful number, since it uses less digits than its factorization.

7208640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7208640 is about 2684.8910592424. The cubic root of 7208640 is about 193.1750851968.

The spelling of 7208640 in words is "seven million, two hundred eight thousand, six hundred forty".