404620212 has 12 divisors (see below), whose sum is σ = 944113856. Its totient is φ = 134873400.

The previous prime is 404620211. The next prime is 404620217. The reversal of 404620212 is 212026404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404620211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16859164 + ... + 16859187.

Almost surely, 2^404620212 is an apocalyptic number.

It is an amenable number.

404620212 is an abundant number, since it is smaller than the sum of its proper divisors (539493644).

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

404620212 is a wasteful number, since it uses less digits than its factorization.

404620212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33718358 (or 33718356 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 404620212 is about 20115.1736756112. The cubic root of 404620212 is about 739.6322813903.

Adding to 404620212 its reverse (212026404), we get a palindrome (616646616).

The spelling of 404620212 in words is "four hundred four million, six hundred twenty thousand, two hundred twelve".