213422404 has 12 divisors (see below), whose sum is σ = 402219244. Its totient is φ = 98502624.

The previous prime is 213422399. The next prime is 213422413. The reversal of 213422404 is 404224312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 96825600 + 116596804 = 9840^2 + 10798^2 .

It is an unprimeable number.

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, 2052087 + ... + 2052190.

Almost surely, 2^213422404 is an apocalyptic number.

It is an amenable number.

213422404 is a deficient number, since it is larger than the sum of its proper divisors (188796840).

213422404 is a wasteful number, since it uses less digits than its factorization.

213422404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104294 (or 4104292 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 213422404 is about 14608.9836744381. The cubic root of 213422404 is about 597.6037799928.

Adding to 213422404 its reverse (404224312), we get a palindrome (617646716).

The spelling of 213422404 in words is "two hundred thirteen million, four hundred twenty-two thousand, four hundred four".