307640704 has 128 divisors (see below), whose sum is σ = 781401600. Its totient is φ = 117448704.

The previous prime is 307640699. The next prime is 307640713. The reversal of 307640704 is 407046703.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 288877 + ... + 289939.

It is an arithmetic number, because the mean of its divisors is an integer number (6104700).

Almost surely, 2^307640704 is an apocalyptic number.

307640704 is a gapful number since it is divisible by the number (34) 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 307640704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390700800).

307640704 is an abundant number, since it is smaller than the sum of its proper divisors (473760896).

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

307640704 is a wasteful number, since it uses less digits than its factorization.

307640704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 307640704 is about 17539.6893929169. The cubic root of 307640704 is about 675.0686379220.

The spelling of 307640704 in words is "three hundred seven million, six hundred forty thousand, seven hundred four".