213449636 has 12 divisors (see below), whose sum is σ = 374177328. Its totient is φ = 106541832.

The previous prime is 213449609. The next prime is 213449693. The reversal of 213449636 is 636944312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213449636.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43106 + ... + 47801.

It is an arithmetic number, because the mean of its divisors is an integer number (31181444).

Almost surely, 2^213449636 is an apocalyptic number.

It is an amenable number.

213449636 is a deficient number, since it is larger than the sum of its proper divisors (160727692).

213449636 is a wasteful number, since it uses less digits than its factorization.

213449636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91498 (or 91496 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 213449636 is about 14609.9156739524. The cubic root of 213449636 is about 597.6291963404.

The spelling of 213449636 in words is "two hundred thirteen million, four hundred forty-nine thousand, six hundred thirty-six".