306769680 has 200 divisors, whose sum is σ = 1217844672. Its totient is φ = 70108416.

The previous prime is 306769657. The next prime is 306769681. The reversal of 306769680 is 86967603.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (306769681) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41979 + ... + 48741.

Almost surely, 2^306769680 is an apocalyptic number.

306769680 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 306769680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608922336).

306769680 is an abundant number, since it is smaller than the sum of its proper divisors (911074992).

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

306769680 is a wasteful number, since it uses less digits than its factorization.

306769680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6795 (or 6780 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 306769680 is about 17514.8417063929. The cubic root of 306769680 is about 674.4309277745.

The spelling of 306769680 in words is "three hundred six million, seven hundred sixty-nine thousand, six hundred eighty".