30861045 has 24 divisors (see below), whose sum is σ = 53624376. Its totient is φ = 16418688.

The previous prime is 30861041. The next prime is 30861053. The reversal of 30861045 is 54016803.

30861045 is a `hidden beast` number, since 3 + 0 + 8 + 610 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2792241 + 28068804 = 1671^2 + 5298^2 .

It is not a de Polignac number, because 30861045 - 2² = 30861041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30861041) 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 23 ways as a sum of consecutive naturals, for example, 29959 + ... + 30971.

It is an arithmetic number, because the mean of its divisors is an integer number (2234349).

Almost surely, 2^30861045 is an apocalyptic number.

It is an amenable number.

30861045 is a deficient number, since it is larger than the sum of its proper divisors (22763331).

30861045 is a wasteful number, since it uses less digits than its factorization.

30861045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30861045 is about 5555.2718205323. The cubic root of 30861045 is about 313.6679960076.

Adding to 30861045 its reverse (54016803), we get a palindrome (84877848).

The spelling of 30861045 in words is "thirty million, eight hundred sixty-one thousand, forty-five".