306230340 has 96 divisors (see below), whose sum is σ = 926593920. Its totient is φ = 75119616.

The previous prime is 306230329. The next prime is 306230359. The reversal of 306230340 is 43032603.

It is a super-2 number, since 2×306230340² = 187554042273031200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326352 + ... + 327288.

It is an arithmetic number, because the mean of its divisors is an integer number (9652020).

Almost surely, 2^306230340 is an apocalyptic number.

306230340 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 306230340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463296960).

306230340 is an abundant number, since it is smaller than the sum of its proper divisors (620363580).

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

306230340 is a wasteful number, since it uses less digits than its factorization.

306230340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 306230340 is about 17499.4382766991. The cubic root of 306230340 is about 674.0354508851.

Adding to 306230340 its reverse (43032603), we get a palindrome (349262943).

The spelling of 306230340 in words is "three hundred six million, two hundred thirty thousand, three hundred forty".