306180380 has 24 divisors (see below), whose sum is σ = 701431920. Its totient is φ = 111338240.

The previous prime is 306180361. The next prime is 306180431. The reversal of 306180380 is 83081603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695645 + ... + 696084.

It is an arithmetic number, because the mean of its divisors is an integer number (29226330).

Almost surely, 2^306180380 is an apocalyptic number.

It is an amenable number.

306180380 is an abundant number, since it is smaller than the sum of its proper divisors (395251540).

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

306180380 is a wasteful number, since it uses less digits than its factorization.

306180380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391749 (or 1391747 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 306180380 is about 17498.0107440817. The cubic root of 306180380 is about 673.9987936827.

The spelling of 306180380 in words is "three hundred six million, one hundred eighty thousand, three hundred eighty".