213898330 has 32 divisors (see below), whose sum is σ = 395041680. Its totient is φ = 83358720.

The previous prime is 213898327. The next prime is 213898331. The reversal of 213898330 is 33898312.

It can be written as a sum of positive squares in 8 ways, for example, as 98743969 + 115154361 = 9937^2 + 10731^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 213898330.

It is not an unprimeable number, because it can be changed into a prime (213898331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64882 + ... + 68098.

Almost surely, 2^213898330 is an apocalyptic number.

213898330 is a deficient number, since it is larger than the sum of its proper divisors (181143350).

213898330 is a wasteful number, since it uses less digits than its factorization.

213898330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 213898330 is about 14625.2634164312. The cubic root of 213898330 is about 598.0476634529.

The spelling of 213898330 in words is "two hundred thirteen million, eight hundred ninety-eight thousand, three hundred thirty".