304985980 has 48 divisors (see below), whose sum is σ = 719740224. Its totient is φ = 107712000.

The previous prime is 304985969. The next prime is 304985981. The reversal of 304985980 is 89589403.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 304985980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304985981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19521 + ... + 31480.

It is an arithmetic number, because the mean of its divisors is an integer number (14994588).

Almost surely, 2^304985980 is an apocalyptic number.

It is an amenable number.

304985980 is an abundant number, since it is smaller than the sum of its proper divisors (414754244).

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

304985980 is a wasteful number, since it uses less digits than its factorization.

304985980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51046 (or 51044 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 304985980 is about 17463.8478005278. The cubic root of 304985980 is about 673.1212355747.

The spelling of 304985980 in words is "three hundred four million, nine hundred eighty-five thousand, nine hundred eighty".