30000217 has 4 divisors (see below), whose sum is σ = 32307940. Its totient is φ = 27692496.

The previous prime is 30000199. The next prime is 30000247. The reversal of 30000217 is 71200003.

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 11861136 + 18139081 = 3444^2 + 4259^2 .

It is not a de Polignac number, because 30000217 - 2²³ = 21611609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 2307709 = 30000217 / (3 + 0 + 0 + 0 + 0 + 2 + 1 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30000197 and 30000206.

It is not an unprimeable number, because it can be changed into a prime (30000247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153842 + ... + 1153867.

It is an arithmetic number, because the mean of its divisors is an integer number (8076985).

Almost surely, 2^30000217 is an apocalyptic number.

It is an amenable number.

30000217 is a deficient number, since it is larger than the sum of its proper divisors (2307723).

30000217 is a wasteful number, since it uses less digits than its factorization.

30000217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307722.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 30000217 is about 5477.2453843150. The cubic root of 30000217 is about 310.7239997819.

The spelling of 30000217 in words is "thirty million, two hundred seventeen", and thus it is an aban number.