306504040 has 32 divisors (see below), whose sum is σ = 690804000. Its totient is φ = 122393664.

The previous prime is 306504031. The next prime is 306504053. The reversal of 306504040 is 40405603.

It is a super-3 number, since 3×306504040³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18571 + ... + 30949.

It is an arithmetic number, because the mean of its divisors is an integer number (21587625).

Almost surely, 2^306504040 is an apocalyptic number.

It is an amenable number.

306504040 is an abundant number, since it is smaller than the sum of its proper divisors (384299960).

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

306504040 is a wasteful number, since it uses less digits than its factorization.

306504040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13009 (or 13005 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 306504040 is about 17507.2567811179. The cubic root of 306504040 is about 674.2362023500.

Adding to 306504040 its reverse (40405603), we get a palindrome (346909643).

The spelling of 306504040 in words is "three hundred six million, five hundred four thousand, forty".