30117205 has 8 divisors (see below), whose sum is σ = 36237312. Its totient is φ = 24029328.

The previous prime is 30117193. The next prime is 30117211. The reversal of 30117205 is 50271103.

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 30117205 - 2⁹ = 30116693 is a prime.

It is a Duffinian number.

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, 5949 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (4529664).

Almost surely, 2^30117205 is an apocalyptic number.

It is an amenable number.

30117205 is a deficient number, since it is larger than the sum of its proper divisors (6120107).

30117205 is a wasteful number, since it uses less digits than its factorization.

30117205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16115.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 30117205 is about 5487.9144490416. The cubic root of 30117205 is about 311.1273727564.

Adding to 30117205 its reverse (50271103), we get a palindrome (80388308).

The spelling of 30117205 in words is "thirty million, one hundred seventeen thousand, two hundred five".