30912093 has 6 divisors (see below), whose sum is σ = 44650814. Its totient is φ = 20608056.

The previous prime is 30912067. The next prime is 30912109. The reversal of 30912093 is 39021903.

It can be written as a sum of positive squares in only one way, i.e., 30769209 + 142884 = 5547^2 + 378^2 .

It is not a de Polignac number, because 30912093 - 2⁵ = 30912061 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 (30917093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1717330 + ... + 1717347.

Almost surely, 2^30912093 is an apocalyptic number.

It is an amenable number.

30912093 is a deficient number, since it is larger than the sum of its proper divisors (13738721).

30912093 is a wasteful number, since it uses less digits than its factorization.

30912093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434683 (or 3434680 counting only the distinct ones).

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

The square root of 30912093 is about 5559.8644767656. The cubic root of 30912093 is about 313.8408493386.

Adding to 30912093 its reverse (39021903), we get a palindrome (69933996).

It can be divided in two parts, 3091 and 2093, that added together give a square (5184 = 72²).

The spelling of 30912093 in words is "thirty million, nine hundred twelve thousand, ninety-three".