306807129 has 16 divisors (see below), whose sum is σ = 455731200. Its totient is φ = 203997168.

The previous prime is 306807077. The next prime is 306807131. The reversal of 306807129 is 921708603.

It is not a de Polignac number, because 306807129 - 2¹² = 306803033 is a prime.

It is a super-2 number, since 2×306807129² = 188261228810445282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 306807093 and 306807102.

It is not an unprimeable number, because it can be changed into a prime (306807169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4494 + ... + 25175.

It is an arithmetic number, because the mean of its divisors is an integer number (28483200).

Almost surely, 2^306807129 is an apocalyptic number.

It is an amenable number.

306807129 is a deficient number, since it is larger than the sum of its proper divisors (148924071).

306807129 is a wasteful number, since it uses less digits than its factorization.

306807129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30061 (or 30055 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 306807129 is about 17515.9107385257. The cubic root of 306807129 is about 674.4583704433.

It can be divided in two parts, 306807 and 129, that added together give a triangular number (306936 = T₇₈₃).

The spelling of 306807129 in words is "three hundred six million, eight hundred seven thousand, one hundred twenty-nine".