213886 has 8 divisors (see below), whose sum is σ = 322920. Its totient is φ = 106248.

The previous prime is 213881. The next prime is 213887. The reversal of 213886 is 688312.

213886 is nontrivially palindromic in base 12.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225 + ... + 691.

It is an arithmetic number, because the mean of its divisors is an integer number (40365).

2²¹³⁸⁸⁶ is an apocalyptic number.

213886 is a deficient number, since it is larger than the sum of its proper divisors (109034).

213886 is a wasteful number, since it uses less digits than its factorization.

213886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698.

The product of its digits is 2304, while the sum is 28.

The square root of 213886 is about 462.4781075900. The cubic root of 213886 is about 59.8036171904.

It can be divided in two parts, 2 and 13886, that multiplied together give a palindrome (27772).

The spelling of 213886 in words is "two hundred thirteen thousand, eight hundred eighty-six".