30133729 has 8 divisors (see below), whose sum is σ = 31191048. Its totient is φ = 29091840.

The previous prime is 30133717. The next prime is 30133739. The reversal of 30133729 is 92733103.

It can be written as a sum of positive squares in 4 ways, for example, as 2096704 + 28037025 = 1448^2 + 5295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30133729 - 2⁹ = 30133217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30133697 and 30133706.

It is not an unprimeable number, because it can be changed into a prime (30133739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (3898881).

Almost surely, 2^30133729 is an apocalyptic number.

It is an amenable number.

30133729 is a deficient number, since it is larger than the sum of its proper divisors (1057319).

30133729 is an equidigital number, since it uses as much as digits as its factorization.

30133729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30133729 is about 5489.4197325400. The cubic root of 30133729 is about 311.1842630374.

The spelling of 30133729 in words is "thirty million, one hundred thirty-three thousand, seven hundred twenty-nine".