7280001 has 24 divisors (see below), whose sum is σ = 10930920. Its totient is φ = 4665600.

The previous prime is 7279999. The next prime is 7280011. The reversal of 7280001 is 1000827.

7280001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 119025 + 7160976 = 345^2 + 2676^2 .

It is not a de Polignac number, because 7280001 - 2¹ = 7279999 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280011) 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 23 ways as a sum of consecutive naturals, for example, 40131 + ... + 40311.

It is an arithmetic number, because the mean of its divisors is an integer number (455455).

Almost surely, 2^7280001 is an apocalyptic number.

It is an amenable number.

7280001 is a deficient number, since it is larger than the sum of its proper divisors (3650919).

7280001 is a wasteful number, since it uses less digits than its factorization.

7280001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 7280001 is about 2698.1476979587. The cubic root of 7280001 is about 193.8104305428.

Adding to 7280001 its reverse (1000827), we get a palindrome (8280828).

The spelling of 7280001 in words is "seven million, two hundred eighty thousand, one".