30109445 has 8 divisors (see below), whose sum is σ = 36213144. Its totient is φ = 24033024.

The previous prime is 30109423. The next prime is 30109451. The reversal of 30109445 is 54490103.

It can be written as a sum of positive squares in 4 ways, for example, as 9597604 + 20511841 = 3098^2 + 4529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30109445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4304 + ... + 8873.

It is an arithmetic number, because the mean of its divisors is an integer number (4526643).

Almost surely, 2^30109445 is an apocalyptic number.

It is an amenable number.

30109445 is a deficient number, since it is larger than the sum of its proper divisors (6103699).

30109445 is a wasteful number, since it uses less digits than its factorization.

30109445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13639.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30109445 is about 5487.2073953879. The cubic root of 30109445 is about 311.1006487648.

Adding to 30109445 its reverse (54490103), we get a palindrome (84599548).

The spelling of 30109445 in words is "thirty million, one hundred nine thousand, four hundred forty-five".