212444004 has 24 divisors (see below), whose sum is σ = 495983488. Its totient is φ = 70774560.

The previous prime is 212444003. The next prime is 212444009. The reversal of 212444004 is 400444212.

It is not an unprimeable number, because it can be changed into a prime (212444003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23574 + ... + 31314.

Almost surely, 2^212444004 is an apocalyptic number.

It is an amenable number.

212444004 is an abundant number, since it is smaller than the sum of its proper divisors (283539484).

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

212444004 is a wasteful number, since it uses less digits than its factorization.

212444004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035 (or 10033 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 212444004 is about 14575.4589636141. The cubic root of 212444004 is about 596.6891754493.

Adding to 212444004 its reverse (400444212), we get a palindrome (612888216).

The spelling of 212444004 in words is "two hundred twelve million, four hundred forty-four thousand, four".