212444530 has 16 divisors (see below), whose sum is σ = 385193880. Its totient is φ = 84356992.

The previous prime is 212444521. The next prime is 212444543. The reversal of 212444530 is 35444212.

It is a happy number.

212444530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 175271121 + 37173409 = 13239^2 + 6097^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212444495 and 212444504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76165 + ... + 78904.

Almost surely, 2^212444530 is an apocalyptic number.

212444530 is a deficient number, since it is larger than the sum of its proper divisors (172749350).

212444530 is a wasteful number, since it uses less digits than its factorization.

212444530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155213.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 212444530 is about 14575.4770076317. The cubic root of 212444530 is about 596.6896679057.

Adding to 212444530 its reverse (35444212), we get a palindrome (247888742).

The spelling of 212444530 in words is "two hundred twelve million, four hundred forty-four thousand, five hundred thirty".