30107845 has 4 divisors (see below), whose sum is σ = 36129420. Its totient is φ = 24086272.

The previous prime is 30107843. The next prime is 30107849. The reversal of 30107845 is 54870103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54870103 = 47 ⋅1167449.

It can be written as a sum of positive squares in 2 ways, for example, as 10975969 + 19131876 = 3313^2 + 4374^2 .

It is a cyclic number.

It is not a de Polignac number, because 30107845 - 2¹ = 30107843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30107843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010780 + ... + 3010789.

It is an arithmetic number, because the mean of its divisors is an integer number (9032355).

Almost surely, 2^30107845 is an apocalyptic number.

It is an amenable number.

30107845 is a deficient number, since it is larger than the sum of its proper divisors (6021575).

30107845 is an equidigital number, since it uses as much as digits as its factorization.

30107845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6021574.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30107845 is about 5487.0615998000. The cubic root of 30107845 is about 311.0951380924.

Adding to 30107845 its reverse (54870103), we get a palindrome (84977948).

The spelling of 30107845 in words is "thirty million, one hundred seven thousand, eight hundred forty-five".