304213404 has 24 divisors (see below), whose sum is σ = 774361728. Its totient is φ = 92185840.

The previous prime is 304213367. The next prime is 304213457. The reversal of 304213404 is 404312403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152192 + ... + 1152455.

It is an arithmetic number, because the mean of its divisors is an integer number (32265072).

Almost surely, 2^304213404 is an apocalyptic number.

It is an amenable number.

304213404 is an abundant number, since it is smaller than the sum of its proper divisors (470148324).

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

304213404 is a wasteful number, since it uses less digits than its factorization.

304213404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304665 (or 2304663 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 304213404 is about 17441.7144799472. The cubic root of 304213404 is about 672.5523820578.

Adding to 304213404 its reverse (404312403), we get a palindrome (708525807).

The spelling of 304213404 in words is "three hundred four million, two hundred thirteen thousand, four hundred four".