306872380 has 12 divisors (see below), whose sum is σ = 644432040. Its totient is φ = 122748944.

The previous prime is 306872369. The next prime is 306872383. The reversal of 306872380 is 83278603.

306872380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306872383) 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, 7671790 + ... + 7671829.

It is an arithmetic number, because the mean of its divisors is an integer number (53702670).

Almost surely, 2^306872380 is an apocalyptic number.

It is an amenable number.

306872380 is an abundant number, since it is smaller than the sum of its proper divisors (337559660).

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

306872380 is a wasteful number, since it uses less digits than its factorization.

306872380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15343628 (or 15343626 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 306872380 is about 17517.7732603205. The cubic root of 306872380 is about 674.5061811137.

The spelling of 306872380 in words is "three hundred six million, eight hundred seventy-two thousand, three hundred eighty".