210243404 has 12 divisors (see below), whose sum is σ = 420486864. Its totient is φ = 90104304.

The previous prime is 210243401. The next prime is 210243409. The reversal of 210243404 is 404342012.

210243404 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (210243401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3754319 + ... + 3754374.

It is an arithmetic number, because the mean of its divisors is an integer number (35040572).

Almost surely, 2^210243404 is an apocalyptic number.

It is an amenable number.

210243404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

210243404 is a wasteful number, since it uses less digits than its factorization.

210243404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508704 (or 7508702 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 210243404 is about 14499.7725499402. The cubic root of 210243404 is about 594.6217533349.

Adding to 210243404 its reverse (404342012), we get a palindrome (614585416).

The spelling of 210243404 in words is "two hundred ten million, two hundred forty-three thousand, four hundred four".