306828087 has 16 divisors (see below), whose sum is σ = 444879072. Its totient is φ = 187315200.

The previous prime is 306828061. The next prime is 306828089. The reversal of 306828087 is 780828603.

It is not a de Polignac number, because 306828087 - 2⁷ = 306827959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306828089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79414 + ... + 83187.

It is an arithmetic number, because the mean of its divisors is an integer number (27804942).

Almost surely, 2^306828087 is an apocalyptic number.

306828087 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

306828087 is a deficient number, since it is larger than the sum of its proper divisors (138050985).

306828087 is a wasteful number, since it uses less digits than its factorization.

306828087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162658.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 306828087 is about 17516.5089843838. The cubic root of 306828087 is about 674.4737275144.

The spelling of 306828087 in words is "three hundred six million, eight hundred twenty-eight thousand, eighty-seven".