304378789640 has 64 divisors (see below), whose sum is σ = 697846406400. Its totient is φ = 119463144192.

The previous prime is 304378789607. The next prime is 304378789651. The reversal of 304378789640 is 46987873403.

It is a super-2 number, since 2×304378789640² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 304378789640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110189 + ... + 787971.

It is an arithmetic number, because the mean of its divisors is an integer number (10903850100).

Almost surely, 2^304378789640 is an apocalyptic number.

It is an amenable number.

304378789640 is an abundant number, since it is smaller than the sum of its proper divisors (393467616760).

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

304378789640 is a wasteful number, since it uses less digits than its factorization.

304378789640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678006 (or 678002 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 59.

The spelling of 304378789640 in words is "three hundred four billion, three hundred seventy-eight million, seven hundred eighty-nine thousand, six hundred forty".