30120663 has 4 divisors (see below), whose sum is σ = 40160888. Its totient is φ = 20080440.

The previous prime is 30120613. The next prime is 30120667. The reversal of 30120663 is 36602103.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30120663 - 2¹³ = 30112471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120667) 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, 5020108 + ... + 5020113.

It is an arithmetic number, because the mean of its divisors is an integer number (10040222).

Almost surely, 2^30120663 is an apocalyptic number.

30120663 is a deficient number, since it is larger than the sum of its proper divisors (10040225).

30120663 is a wasteful number, since it uses less digits than its factorization.

30120663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040224.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30120663 is about 5488.2294959304. The cubic root of 30120663 is about 311.1392799844.

Adding to 30120663 its reverse (36602103), we get a palindrome (66722766).

The spelling of 30120663 in words is "thirty million, one hundred twenty thousand, six hundred sixty-three".