30005145 has 24 divisors (see below), whose sum is σ = 52296192. Its totient is φ = 15914400.

The previous prime is 30005141. The next prime is 30005149. The reversal of 30005145 is 54150003.

It is an interprime number because it is at equal distance from previous prime (30005141) and next prime (30005149).

It is not a de Polignac number, because 30005145 - 2² = 30005141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30005141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6850 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (2179008).

Almost surely, 2^30005145 is an apocalyptic number.

It is an amenable number.

30005145 is a deficient number, since it is larger than the sum of its proper divisors (22291047).

30005145 is a wasteful number, since it uses less digits than its factorization.

30005145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693 (or 3690 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 30005145 is about 5477.6952270093. The cubic root of 30005145 is about 310.7410125925.

Adding to 30005145 its reverse (54150003), we get a palindrome (84155148).

The spelling of 30005145 in words is "thirty million, five thousand, one hundred forty-five".