304342920 has 384 divisors, whose sum is σ = 1211500800. Its totient is φ = 68584320.

The previous prime is 304342919. The next prime is 304342939. The reversal of 304342920 is 29243403.

It is a happy number.

It is a super-2 number, since 2×304342920² = 185249225908252800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4286485 + ... + 4286555.

It is an arithmetic number, because the mean of its divisors is an integer number (3154950).

Almost surely, 2^304342920 is an apocalyptic number.

304342920 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 304342920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605750400).

304342920 is an abundant number, since it is smaller than the sum of its proper divisors (907157880).

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

304342920 is an equidigital number, since it uses as much as digits as its factorization.

304342920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 304342920 is about 17445.4269079321. The cubic root of 304342920 is about 672.6478128032.

The spelling of 304342920 in words is "three hundred four million, three hundred forty-two thousand, nine hundred twenty".