304034640 has 160 divisors (see below), whose sum is σ = 1160092416. Its totient is φ = 64143360.

The previous prime is 304034623. The next prime is 304034641. The reversal of 304034640 is 46430403.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 304034640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304034641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14880 + ... + 28800.

Almost surely, 2^304034640 is an apocalyptic number.

304034640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304034640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580046208).

304034640 is an abundant number, since it is smaller than the sum of its proper divisors (856057776).

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

304034640 is a wasteful number, since it uses less digits than its factorization.

304034640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13957 (or 13951 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 304034640 is about 17436.5891159940. The cubic root of 304034640 is about 672.4206196065.

The spelling of 304034640 in words is "three hundred four million, thirty-four thousand, six hundred forty".