213396 has 12 divisors (see below), whose sum is σ = 497952. Its totient is φ = 71128.

The previous prime is 213391. The next prime is 213397. The reversal of 213396 is 693312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8880 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2²¹³³⁹⁶ is an apocalyptic number.

It is an amenable number.

213396 is an abundant number, since it is smaller than the sum of its proper divisors (284556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213396 is a wasteful number, since it uses less digits than its factorization.

213396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17790 (or 17788 counting only the distinct ones).

The product of its digits is 972, while the sum is 24.

The square root of 213396 is about 461.9480490272. The cubic root of 213396 is about 59.7579134375.

It can be divided in two parts, 213 and 396, that multiplied together give a palindrome (84348).

The spelling of 213396 in words is "two hundred thirteen thousand, three hundred ninety-six".