7265640 has 64 divisors (see below), whose sum is σ = 21980160. Its totient is φ = 1921280.

The previous prime is 7265633. The next prime is 7265641. The reversal of 7265640 is 465627.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7265598 and 7265607.

It is not an unprimeable number, because it can be changed into a prime (7265641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22762 + ... + 23078.

It is an arithmetic number, because the mean of its divisors is an integer number (343440).

Almost surely, 2^7265640 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 7265640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10990080).

7265640 is an abundant number, since it is smaller than the sum of its proper divisors (14714520).

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

7265640 is a wasteful number, since it uses less digits than its factorization.

7265640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 7265640 is about 2695.4851140379. The cubic root of 7265640 is about 193.6829056619.

The spelling of 7265640 in words is "seven million, two hundred sixty-five thousand, six hundred forty".