210412404 has 30 divisors (see below), whose sum is σ = 550060434. Its totient is φ = 70137360.

The previous prime is 210412393. The next prime is 210412421. The reversal of 210412404 is 404214012.

210412404 is a `hidden beast` number, since 210 + 412 + 40 + 4 = 666.

210412404 is digitally balanced in base 3, 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 only one way, i.e., 112402404 + 98010000 = 10602^2 + 9900^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 324387 + ... + 325034.

Almost surely, 2^210412404 is an apocalyptic number.

It is an amenable number.

210412404 is an abundant number, since it is smaller than the sum of its proper divisors (339648030).

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

210412404 is a wasteful number, since it uses less digits than its factorization.

210412404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649437 (or 649426 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 210412404 is about 14505.5990569159. The cubic root of 210412404 is about 594.7810356406.

Adding to 210412404 its reverse (404214012), we get a palindrome (614626416).

The spelling of 210412404 in words is "two hundred ten million, four hundred twelve thousand, four hundred four".