7230240 has 72 divisors (see below), whose sum is σ = 24678108. Its totient is φ = 1927680.

The previous prime is 7230239. The next prime is 7230277. The reversal of 7230240 is 420327.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7033104 + 197136 = 2652^2 + 444^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1071 + ... + 3950.

Almost surely, 2^7230240 is an apocalyptic number.

It is an amenable number.

7230240 is an abundant number, since it is smaller than the sum of its proper divisors (17447868).

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

7230240 is a wasteful number, since it uses less digits than its factorization.

7230240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042 (or 5031 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 7230240 is about 2688.9105600596. The cubic root of 7230240 is about 193.3678363576.

Adding to 7230240 its reverse (420327), we get a palindrome (7650567).

The spelling of 7230240 in words is "seven million, two hundred thirty thousand, two hundred forty".