30120605 has 16 divisors (see below), whose sum is σ = 38337600. Its totient is φ = 22654080.

The previous prime is 30120581. The next prime is 30120611. The reversal of 30120605 is 50602103.

It is not a de Polignac number, because 30120605 - 2¹⁸ = 29858461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12065 + ... + 14345.

It is an arithmetic number, because the mean of its divisors is an integer number (2396100).

Almost surely, 2^30120605 is an apocalyptic number.

It is an amenable number.

30120605 is a deficient number, since it is larger than the sum of its proper divisors (8216995).

30120605 is a wasteful number, since it uses less digits than its factorization.

30120605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30120605 is about 5488.2242118922. The cubic root of 30120605 is about 311.1390802755.

Adding to 30120605 its reverse (50602103), we get a palindrome (80722708).

The spelling of 30120605 in words is "thirty million, one hundred twenty thousand, six hundred five".