213024404 has 6 divisors (see below), whose sum is σ = 372792714. Its totient is φ = 106512200.

The previous prime is 213024391. The next prime is 213024407. The reversal of 213024404 is 404420312.

It can be written as a sum of positive squares in only one way, i.e., 206784400 + 6240004 = 14380^2 + 2498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213024407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26628047 + ... + 26628054.

It is an arithmetic number, because the mean of its divisors is an integer number (62132119).

Almost surely, 2^213024404 is an apocalyptic number.

It is an amenable number.

213024404 is a deficient number, since it is larger than the sum of its proper divisors (159768310).

213024404 is a wasteful number, since it uses less digits than its factorization.

213024404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53256105 (or 53256103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 213024404 is about 14595.3555626439. The cubic root of 213024404 is about 597.2320690848.

Adding to 213024404 its reverse (404420312), we get a palindrome (617444716).

The spelling of 213024404 in words is "two hundred thirteen million, twenty-four thousand, four hundred four".