7280213 has 4 divisors (see below), whose sum is σ = 7596768. Its totient is φ = 6963660.

The previous prime is 7280197. The next prime is 7280263. The reversal of 7280213 is 3120827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7280213 - 2⁴ = 7280197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 316531 = 7280213 / (7 + 2 + 8 + 0 + 2 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280263) 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 3 ways as a sum of consecutive naturals, for example, 158243 + ... + 158288.

It is an arithmetic number, because the mean of its divisors is an integer number (1899192).

Almost surely, 2^7280213 is an apocalyptic number.

It is an amenable number.

7280213 is a deficient number, since it is larger than the sum of its proper divisors (316555).

7280213 is a wasteful number, since it uses less digits than its factorization.

7280213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316554.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7280213 is about 2698.1869838838. The cubic root of 7280213 is about 193.8123118343.

The spelling of 7280213 in words is "seven million, two hundred eighty thousand, two hundred thirteen".