212018504 has 32 divisors (see below), whose sum is σ = 407116800. Its totient is φ = 103466880.

The previous prime is 212018489. The next prime is 212018557. The reversal of 212018504 is 405810212.

It is a self number, because there is not a number n which added to its sum of digits gives 212018504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213449 + ... + 214439.

It is an arithmetic number, because the mean of its divisors is an integer number (12722400).

Almost surely, 2^212018504 is an apocalyptic number.

It is an amenable number.

212018504 is a deficient number, since it is larger than the sum of its proper divisors (195098296).

212018504 is a wasteful number, since it uses less digits than its factorization.

212018504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 212018504 is about 14560.8551946649. The cubic root of 212018504 is about 596.2905434445.

Adding to 212018504 its reverse (405810212), we get a palindrome (617828716).

The spelling of 212018504 in words is "two hundred twelve million, eighteen thousand, five hundred four".