210404164 has 12 divisors (see below), whose sum is σ = 380904300. Its totient is φ = 101574368.

The previous prime is 210404113. The next prime is 210404191. The reversal of 210404164 is 461404012.

It can be written as a sum of positive squares in 2 ways, for example, as 152522500 + 57881664 = 12350^2 + 7608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906799 + ... + 907030.

It is an arithmetic number, because the mean of its divisors is an integer number (31742025).

Almost surely, 2^210404164 is an apocalyptic number.

It is an amenable number.

210404164 is a deficient number, since it is larger than the sum of its proper divisors (170500136).

210404164 is a wasteful number, since it uses less digits than its factorization.

210404164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813862 (or 1813860 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 210404164 is about 14505.3150258793. The cubic root of 210404164 is about 594.7732714283.

Adding to 210404164 its reverse (461404012), we get a palindrome (671808176).

The spelling of 210404164 in words is "two hundred ten million, four hundred four thousand, one hundred sixty-four".