210424404 has 72 divisors (see below), whose sum is σ = 516487104. Its totient is φ = 66662400.

The previous prime is 210424393. The next prime is 210424429. The reversal of 210424404 is 404424012.

210424404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818644 + ... + 818900.

It is an arithmetic number, because the mean of its divisors is an integer number (7173432).

Almost surely, 2^210424404 is an apocalyptic number.

It is an amenable number.

210424404 is an abundant number, since it is smaller than the sum of its proper divisors (306062700).

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

210424404 is a wasteful number, since it uses less digits than its factorization.

210424404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 364 counting only the distinct ones).

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

The square root of 210424404 is about 14506.0126844009. The cubic root of 210424404 is about 594.7923423833.

Adding to 210424404 its reverse (404424012), we get a palindrome (614848416).

The spelling of 210424404 in words is "two hundred ten million, four hundred twenty-four thousand, four hundred four".