307685040 has 160 divisors (see below), whose sum is σ = 1087805376. Its totient is φ = 71270400.

The previous prime is 307685029. The next prime is 307685113. The reversal of 307685040 is 40586703.

It is a junction number, because it is equal to n+sod(n) for n = 307684992 and 307685010.

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, 50140 + ... + 55940.

Almost surely, 2^307685040 is an apocalyptic number.

307685040 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 307685040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543902688).

307685040 is an abundant number, since it is smaller than the sum of its proper divisors (780120336).

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

307685040 is a wasteful number, since it uses less digits than its factorization.

307685040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847 (or 5841 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 307685040 is about 17540.9532238131. The cubic root of 307685040 is about 675.1010657997.

The spelling of 307685040 in words is "three hundred seven million, six hundred eighty-five thousand, forty".