304213120 has 32 divisors (see below), whose sum is σ = 727261020. Its totient is φ = 121684992.

The previous prime is 304213099. The next prime is 304213139. The reversal of 304213120 is 21312403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 287370304 + 16842816 = 16952^2 + 4104^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 304213094 and 304213103.

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, 237027 + ... + 238306.

Almost surely, 2^304213120 is an apocalyptic number.

It is an amenable number.

304213120 is an abundant number, since it is smaller than the sum of its proper divisors (423047900).

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

304213120 is an equidigital number, since it uses as much as digits as its factorization.

304213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475352 (or 475340 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 304213120 is about 17441.7063385438. The cubic root of 304213120 is about 672.5521727695.

Adding to 304213120 its reverse (21312403), we get a palindrome (325525523).

The spelling of 304213120 in words is "three hundred four million, two hundred thirteen thousand, one hundred twenty".