213932436 has 12 divisors (see below), whose sum is σ = 499175712. Its totient is φ = 71310808.

The previous prime is 213932399. The next prime is 213932441. The reversal of 213932436 is 634239312.

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

It is a junction number, because it is equal to n+sod(n) for n = 213932397 and 213932406.

It is a congruent number.

It is an unprimeable number.

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, 8913840 + ... + 8913863.

It is an arithmetic number, because the mean of its divisors is an integer number (41597976).

Almost surely, 2^213932436 is an apocalyptic number.

It is an amenable number.

213932436 is an abundant number, since it is smaller than the sum of its proper divisors (285243276).

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

213932436 is a wasteful number, since it uses less digits than its factorization.

213932436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17827710 (or 17827708 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The square root of 213932436 is about 14626.4293660483. The cubic root of 213932436 is about 598.0794479143.

The spelling of 213932436 in words is "two hundred thirteen million, nine hundred thirty-two thousand, four hundred thirty-six".