307660140 has 96 divisors (see below), whose sum is σ = 966813120. Its totient is φ = 81216000.

The previous prime is 307660139. The next prime is 307660147. The reversal of 307660140 is 41066703.

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

It is not an unprimeable number, because it can be changed into a prime (307660147) 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 31 ways as a sum of consecutive naturals, for example, 51720 + ... + 57360.

It is an arithmetic number, because the mean of its divisors is an integer number (10070970).

Almost surely, 2^307660140 is an apocalyptic number.

307660140 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 307660140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483406560).

307660140 is an abundant number, since it is smaller than the sum of its proper divisors (659152980).

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

307660140 is a wasteful number, since it uses less digits than its factorization.

307660140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760 (or 5752 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 307660140 is about 17540.2434418682. The cubic root of 307660140 is about 675.0828540271.

The spelling of 307660140 in words is "three hundred seven million, six hundred sixty thousand, one hundred forty".