210404012 has 48 divisors (see below), whose sum is σ = 454585152. Its totient is φ = 82978560.

The previous prime is 210404009. The next prime is 210404017.

210404012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×210404012² = 88539696531392288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (210404017) 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 15 ways as a sum of consecutive naturals, for example, 152558 + ... + 153930.

It is an arithmetic number, because the mean of its divisors is an integer number (9470524).

Almost surely, 2^210404012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210404012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227292576).

210404012 is an abundant number, since it is smaller than the sum of its proper divisors (244181140).

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

210404012 is a wasteful number, since it uses less digits than its factorization.

210404012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 210404012 is about 14505.3097864196. The cubic root of 210404012 is about 594.7731282031.

It can be divided in two parts, 21040 and 4012, that added together give a palindrome (25052).

The spelling of 210404012 in words is "two hundred ten million, four hundred four thousand, twelve".