304479140 has 36 divisors (see below), whose sum is σ = 743801436. Its totient is φ = 104392512.

The previous prime is 304479139. The next prime is 304479143. The reversal of 304479140 is 41974403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 127961344 + 176517796 = 11312^2 + 13286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 304479097 and 304479106.

It is not an unprimeable number, because it can be changed into a prime (304479143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154367 + ... + 156326.

It is an arithmetic number, because the mean of its divisors is an integer number (20661151).

Almost surely, 2^304479140 is an apocalyptic number.

It is an amenable number.

304479140 is an abundant number, since it is smaller than the sum of its proper divisors (439322296).

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

304479140 is a wasteful number, since it uses less digits than its factorization.

304479140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310716 (or 310707 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 304479140 is about 17449.3306461881. The cubic root of 304479140 is about 672.7481540213.

The spelling of 304479140 in words is "three hundred four million, four hundred seventy-nine thousand, one hundred forty".