30684029 has 4 divisors (see below), whose sum is σ = 30732540. Its totient is φ = 30635520.

The previous prime is 30684011. The next prime is 30684053. The reversal of 30684029 is 92048603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26265625 + 4418404 = 5125^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 30684029 - 2¹² = 30679933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30683986 and 30684004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30684529) 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, 23294 + ... + 24575.

It is an arithmetic number, because the mean of its divisors is an integer number (7683135).

Almost surely, 2^30684029 is an apocalyptic number.

It is an amenable number.

30684029 is a deficient number, since it is larger than the sum of its proper divisors (48511).

30684029 is an equidigital number, since it uses as much as digits as its factorization.

30684029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48510.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30684029 is about 5539.3166546064. The cubic root of 30684029 is about 313.0671224881.

The spelling of 30684029 in words is "thirty million, six hundred eighty-four thousand, twenty-nine".