30033021 has 8 divisors (see below), whose sum is σ = 40072480. Its totient is φ = 20007792.

The previous prime is 30033019. The next prime is 30033023. The reversal of 30033021 is 12033003.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30033019) and next prime (30033023).

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

It is not a de Polignac number, because 30033021 - 2¹ = 30033019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30032988 and 30033006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30033023) 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 7 ways as a sum of consecutive naturals, for example, 3210 + ... + 8388.

It is an arithmetic number, because the mean of its divisors is an integer number (5009060).

Almost surely, 2^30033021 is an apocalyptic number.

It is an amenable number.

30033021 is a deficient number, since it is larger than the sum of its proper divisors (10039459).

30033021 is a wasteful number, since it uses less digits than its factorization.

30033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 30033021 is about 5480.2391371180. The cubic root of 30033021 is about 310.8372131534.

Adding to 30033021 its reverse (12033003), we get a palindrome (42066024).

The spelling of 30033021 in words is "thirty million, thirty-three thousand, twenty-one".