7264240 has 20 divisors (see below), whose sum is σ = 16889544. Its totient is φ = 2905664.

The previous prime is 7264237. The next prime is 7264267. The reversal of 7264240 is 424627.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 45322 + ... + 45481.

Almost surely, 2^7264240 is an apocalyptic number.

It is an amenable number.

7264240 is an abundant number, since it is smaller than the sum of its proper divisors (9625304).

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

7264240 is a wasteful number, since it uses less digits than its factorization.

7264240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90816 (or 90810 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 7264240 is about 2695.2254080132. The cubic root of 7264240 is about 193.6704647534.

Adding to 7264240 its reverse (424627), we get a palindrome (7688867).

The spelling of 7264240 in words is "seven million, two hundred sixty-four thousand, two hundred forty".