30540033 has 12 divisors (see below), whose sum is σ = 44197348. Its totient is φ = 20321280.

The previous prime is 30540017. The next prime is 30540079. The reversal of 30540033 is 33004503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28643904 + 1896129 = 5352^2 + 1377^2 .

It is not a de Polignac number, because 30540033 - 2⁴ = 30540017 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 = 30539988 and 30540015.

It is not an unprimeable number, because it can be changed into a prime (30540233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2253 + ... + 8133.

Almost surely, 2^30540033 is an apocalyptic number.

It is an amenable number.

30540033 is a deficient number, since it is larger than the sum of its proper divisors (13657315).

30540033 is a wasteful number, since it uses less digits than its factorization.

30540033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464 (or 6461 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 30540033 is about 5526.3037375808. The cubic root of 30540033 is about 312.5766271823.

Adding to 30540033 its reverse (33004503), we get a palindrome (63544536).

The spelling of 30540033 in words is "thirty million, five hundred forty thousand, thirty-three".