213200244 has 18 divisors (see below), whose sum is σ = 538922930. Its totient is φ = 71066736.

The previous prime is 213200243. The next prime is 213200269. The reversal of 213200244 is 442002312.

213200244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 163328400 + 49871844 = 12780^2 + 7062^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213200243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2961079 + ... + 2961150.

Almost surely, 2^213200244 is an apocalyptic number.

It is an amenable number.

213200244 is an abundant number, since it is smaller than the sum of its proper divisors (325722686).

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

213200244 is a wasteful number, since it uses less digits than its factorization.

213200244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5922239 (or 5922234 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 213200244 is about 14601.3781541333. The cubic root of 213200244 is about 597.3963513657.

Adding to 213200244 its reverse (442002312), we get a palindrome (655202556).

It can be divided in two parts, 213200 and 244, that added together give a square (213444 = 462²).

The spelling of 213200244 in words is "two hundred thirteen million, two hundred thousand, two hundred forty-four".