307820080 has 40 divisors (see below), whose sum is σ = 738774144. Its totient is φ = 119155200.

The previous prime is 307820077. The next prime is 307820089. The reversal of 307820080 is 80028703.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (307820089) 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 7 ways as a sum of consecutive naturals, for example, 59581 + ... + 64540.

Almost surely, 2^307820080 is an apocalyptic number.

It is an amenable number.

307820080 is an abundant number, since it is smaller than the sum of its proper divisors (430954064).

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

307820080 is a wasteful number, since it uses less digits than its factorization.

307820080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124165 (or 124159 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 307820080 is about 17544.8020792484. The cubic root of 307820080 is about 675.1998164723.

Adding to 307820080 its reverse (80028703), we get a palindrome (387848783).

The spelling of 307820080 in words is "three hundred seven million, eight hundred twenty thousand, eighty".