213626 has 8 divisors (see below), whose sum is σ = 366240. Its totient is φ = 91548.

The previous prime is 213623. The next prime is 213637. The reversal of 213626 is 626312.

213626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 213598 and 213607.

It is not an unprimeable number, because it can be changed into a prime (213623) 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, 7616 + ... + 7643.

It is an arithmetic number, because the mean of its divisors is an integer number (45780).

2²¹³⁶²⁶ is an apocalyptic number.

213626 is a deficient number, since it is larger than the sum of its proper divisors (152614).

213626 is a wasteful number, since it uses less digits than its factorization.

213626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15268.

The product of its digits is 432, while the sum is 20.

The square root of 213626 is about 462.1969277267. The cubic root of 213626 is about 59.7793749225.

Adding to 213626 its reverse (626312), we get a palindrome (839938).

Subtracting 213626 from its reverse (626312), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 213626 in words is "two hundred thirteen thousand, six hundred twenty-six".