7273213 has 4 divisors (see below), whose sum is σ = 7392508. Its totient is φ = 7153920.

The previous prime is 7273199. The next prime is 7273237. The reversal of 7273213 is 3123727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 6692569 = 762^2 + 2587^2 .

It is a cyclic number.

It is not a de Polignac number, because 7273213 - 2¹⁷ = 7142141 is a prime.

It is a Duffinian number.

7273213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7273283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59556 + ... + 59677.

It is an arithmetic number, because the mean of its divisors is an integer number (1848127).

Almost surely, 2^7273213 is an apocalyptic number.

It is an amenable number.

7273213 is a deficient number, since it is larger than the sum of its proper divisors (119295).

7273213 is a wasteful number, since it uses less digits than its factorization.

7273213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119294.

The product of its digits is 1764, while the sum is 25.

The square root of 7273213 is about 2696.8895045960. The cubic root of 7273213 is about 193.7501744015.

The spelling of 7273213 in words is "seven million, two hundred seventy-three thousand, two hundred thirteen".