307568920 has 16 divisors (see below), whose sum is σ = 692030160. Its totient is φ = 123027552.

The previous prime is 307568909. The next prime is 307568923. The reversal of 307568920 is 29865703.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 7689223 = 307568920 / (3 + 0 + 7 + 5 + 6 + 8 + 9 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307568923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844572 + ... + 3844651.

It is an arithmetic number, because the mean of its divisors is an integer number (43251885).

Almost surely, 2^307568920 is an apocalyptic number.

It is an amenable number.

307568920 is an abundant number, since it is smaller than the sum of its proper divisors (384461240).

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

307568920 is a wasteful number, since it uses less digits than its factorization.

307568920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689234 (or 7689230 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 307568920 is about 17537.6429431095. The cubic root of 307568920 is about 675.0161276439.

The spelling of 307568920 in words is "three hundred seven million, five hundred sixty-eight thousand, nine hundred twenty".