213630522 has 16 divisors (see below), whose sum is σ = 488298432. Its totient is φ = 61037280.

The previous prime is 213630511. The next prime is 213630523. The reversal of 213630522 is 225036312.

It is a junction number, because it is equal to n+sod(n) for n = 213630492 and 213630501.

It is not an unprimeable number, because it can be changed into a prime (213630523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2543179 + ... + 2543262.

It is an arithmetic number, because the mean of its divisors is an integer number (30518652).

Almost surely, 2^213630522 is an apocalyptic number.

213630522 is an abundant number, since it is smaller than the sum of its proper divisors (274667910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213630522 is a wasteful number, since it uses less digits than its factorization.

213630522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086453.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 213630522 is about 14616.1048846811. The cubic root of 213630522 is about 597.7979671947.

Adding to 213630522 its reverse (225036312), we get a palindrome (438666834).

The spelling of 213630522 in words is "two hundred thirteen million, six hundred thirty thousand, five hundred twenty-two".