30133445 has 8 divisors (see below), whose sum is σ = 36292344. Its totient is φ = 24018624.

The previous prime is 30133421. The next prime is 30133463. The reversal of 30133445 is 54433103.

It can be written as a sum of positive squares in 4 ways, for example, as 4418404 + 25715041 = 2102^2 + 5071^2 .

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 30133445 - 2⁸ = 30133189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30133445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9494 + ... + 12263.

It is an arithmetic number, because the mean of its divisors is an integer number (4536543).

Almost surely, 2^30133445 is an apocalyptic number.

It is an amenable number.

30133445 is a deficient number, since it is larger than the sum of its proper divisors (6158899).

30133445 is a wasteful number, since it uses less digits than its factorization.

30133445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22039.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 30133445 is about 5489.3938645355. The cubic root of 30133445 is about 311.1832854329.

Adding to 30133445 its reverse (54433103), we get a palindrome (84566548).

The spelling of 30133445 in words is "thirty million, one hundred thirty-three thousand, four hundred forty-five".