7240328 has 16 divisors (see below), whose sum is σ = 13729500. Its totient is φ = 3579136.

The previous prime is 7240319. The next prime is 7240333. The reversal of 7240328 is 8230427.

It can be written as a sum of positive squares in 2 ways, for example, as 7171684 + 68644 = 2678^2 + 262^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7240297 and 7240306.

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, 4373 + ... + 5796.

Almost surely, 2^7240328 is an apocalyptic number.

It is an amenable number.

7240328 is a deficient number, since it is larger than the sum of its proper divisors (6489172).

7240328 is a wasteful number, since it uses less digits than its factorization.

7240328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10264 (or 10260 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 7240328 is about 2690.7857588444. The cubic root of 7240328 is about 193.4577267900.

Subtracting 7240328 from its reverse (8230427), we obtain a palindrome (990099).

It can be divided in two parts, 72 and 40328, that multiplied together give a square (2903616 = 1704²).

The spelling of 7240328 in words is "seven million, two hundred forty thousand, three hundred twenty-eight".