7280545 has 8 divisors (see below), whose sum is σ = 8940096. Its totient is φ = 5688816.

The previous prime is 7280531. The next prime is 7280549. The reversal of 7280545 is 5450827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7280545 - 2⁵ = 7280513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7280549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16717 + ... + 17146.

It is an arithmetic number, because the mean of its divisors is an integer number (1117512).

Almost surely, 2^7280545 is an apocalyptic number.

It is an amenable number.

7280545 is a deficient number, since it is larger than the sum of its proper divisors (1659551).

7280545 is a wasteful number, since it uses less digits than its factorization.

7280545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33911.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 7280545 is about 2698.2485059757. The cubic root of 7280545 is about 193.8152579344.

The spelling of 7280545 in words is "seven million, two hundred eighty thousand, five hundred forty-five".