213633404 has 6 divisors (see below), whose sum is σ = 373858464. Its totient is φ = 106816700.

The previous prime is 213633403. The next prime is 213633419. The reversal of 213633404 is 404336312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213633403) 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 as a sum of consecutive naturals, namely, 26704172 + ... + 26704179.

It is an arithmetic number, because the mean of its divisors is an integer number (62309744).

Almost surely, 2^213633404 is an apocalyptic number.

It is an amenable number.

213633404 is a deficient number, since it is larger than the sum of its proper divisors (160225060).

213633404 is a wasteful number, since it uses less digits than its factorization.

213633404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53408355 (or 53408353 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 213633404 is about 14616.2034742268. The cubic root of 213633404 is about 597.8006553967.

Adding to 213633404 its reverse (404336312), we get a palindrome (617969716).

The spelling of 213633404 in words is "two hundred thirteen million, six hundred thirty-three thousand, four hundred four".