30120993 has 12 divisors (see below), whose sum is σ = 49723648. Its totient is φ = 17211960.

The previous prime is 30120973. The next prime is 30121001. The reversal of 30120993 is 39902103.

It is not a de Polignac number, because 30120993 - 2¹² = 30116897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30120953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238993 + ... + 239118.

Almost surely, 2^30120993 is an apocalyptic number.

It is an amenable number.

30120993 is a deficient number, since it is larger than the sum of its proper divisors (19602655).

30120993 is a wasteful number, since it uses less digits than its factorization.

30120993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478124 (or 478121 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 30120993 is about 5488.2595601885. The cubic root of 30120993 is about 311.1404162541.

It can be divided in two parts, 30120 and 993, that added together give a palindrome (31113).

The spelling of 30120993 in words is "thirty million, one hundred twenty thousand, nine hundred ninety-three".