7216240 has 20 divisors (see below), whose sum is σ = 16777944. Its totient is φ = 2886464.

The previous prime is 7216213. The next prime is 7216241. The reversal of 7216240 is 426127.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45022 + ... + 45181.

Almost surely, 2^7216240 is an apocalyptic number.

It is an amenable number.

7216240 is an abundant number, since it is smaller than the sum of its proper divisors (9561704).

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

7216240 is a wasteful number, since it uses less digits than its factorization.

7216240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90216 (or 90210 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7216240 is about 2686.3060138413. The cubic root of 7216240 is about 193.2429488995.

The spelling of 7216240 in words is "seven million, two hundred sixteen thousand, two hundred forty".