7239213 has 24 divisors (see below), whose sum is σ = 11205376. Its totient is φ = 4670460.

The previous prime is 7239187. The next prime is 7239233. The reversal of 7239213 is 3129327.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 7239213 - 2⁹ = 7238701 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

Its product of digits (2268) is a multiple of the sum of its prime factors (108).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7239233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233508 + ... + 233538.

Almost surely, 2^7239213 is an apocalyptic number.

It is an amenable number.

7239213 is a deficient number, since it is larger than the sum of its proper divisors (3966163).

7239213 is an frugal number, since it uses more digits than its factorization.

7239213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 34 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 7239213 is about 2690.5785623170. The cubic root of 7239213 is about 193.4477955438.

Adding to 7239213 its product of digits (2268), we get a square (7241481 = 2691²).

The spelling of 7239213 in words is "seven million, two hundred thirty-nine thousand, two hundred thirteen".