30530833 has 4 divisors (see below), whose sum is σ = 30585060. Its totient is φ = 30476608.

The previous prime is 30530813. The next prime is 30530839. The reversal of 30530833 is 33803503.

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 13786369 + 16744464 = 3713^2 + 4092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30530833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30530798 and 30530807.

It is not an unprimeable number, because it can be changed into a prime (30530839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26260 + ... + 27397.

It is an arithmetic number, because the mean of its divisors is an integer number (7646265).

Almost surely, 2^30530833 is an apocalyptic number.

It is an amenable number.

30530833 is a deficient number, since it is larger than the sum of its proper divisors (54227).

30530833 is an equidigital number, since it uses as much as digits as its factorization.

30530833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54226.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 30530833 is about 5525.4712921162. The cubic root of 30530833 is about 312.5452367580.

The spelling of 30530833 in words is "thirty million, five hundred thirty thousand, eight hundred thirty-three".