213449635 has 24 divisors (see below), whose sum is σ = 304902576. Its totient is φ = 142954560.

The previous prime is 213449609. The next prime is 213449693. The reversal of 213449635 is 536944312.

It is not a de Polignac number, because 213449635 - 2⁹ = 213449123 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213449594 and 213449603.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 405 + ... + 20665.

It is an arithmetic number, because the mean of its divisors is an integer number (12704274).

Almost surely, 2^213449635 is an apocalyptic number.

213449635 is a deficient number, since it is larger than the sum of its proper divisors (91452941).

213449635 is a wasteful number, since it uses less digits than its factorization.

213449635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20323 (or 20316 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 213449635 is about 14609.9156397291. The cubic root of 213449635 is about 597.6291954071.

The spelling of 213449635 in words is "two hundred thirteen million, four hundred forty-nine thousand, six hundred thirty-five".