307686140 has 24 divisors (see below), whose sum is σ = 661902192. Its totient is φ = 120072320.

The previous prime is 307686131. The next prime is 307686149. The reversal of 307686140 is 41686703.

It is an interprime number because it is at equal distance from previous prime (307686131) and next prime (307686149).

It is a self number, because there is not a number n which added to its sum of digits gives 307686140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307686149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186794 + ... + 188433.

It is an arithmetic number, because the mean of its divisors is an integer number (27579258).

Almost surely, 2^307686140 is an apocalyptic number.

It is an amenable number.

307686140 is an abundant number, since it is smaller than the sum of its proper divisors (354216052).

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

307686140 is a wasteful number, since it uses less digits than its factorization.

307686140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375277 (or 375275 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 307686140 is about 17540.9845789796. The cubic root of 307686140 is about 675.1018703132.

The spelling of 307686140 in words is "three hundred seven million, six hundred eighty-six thousand, one hundred forty".