304640404530 has 128 divisors (see below), whose sum is σ = 912837980160. Its totient is φ = 63212279040.

The previous prime is 304640404507. The next prime is 304640404547. The reversal of 304640404530 is 35404046403.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 304640404491 and 304640404500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1544787 + ... + 1730793.

It is an arithmetic number, because the mean of its divisors is an integer number (7131546720).

Almost surely, 2^304640404530 is an apocalyptic number.

304640404530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 304640404530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456418990080).

304640404530 is an abundant number, since it is smaller than the sum of its proper divisors (608197575630).

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

304640404530 is a wasteful number, since it uses less digits than its factorization.

304640404530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186744.

The product of its (nonzero) digits is 69120, while the sum is 33.

The spelling of 304640404530 in words is "three hundred four billion, six hundred forty million, four hundred four thousand, five hundred thirty".