30136445 has 8 divisors (see below), whose sum is σ = 36537144. Its totient is φ = 23860224.

The previous prime is 30136439. The next prime is 30136459. The reversal of 30136445 is 54463103.

It can be written as a sum of positive squares in 4 ways, for example, as 6497401 + 23639044 = 2549^2 + 4862^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30136445 - 2¹⁰ = 30135421 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, 30584 + ... + 31553.

It is an arithmetic number, because the mean of its divisors is an integer number (4567143).

Almost surely, 2^30136445 is an apocalyptic number.

It is an amenable number.

30136445 is a deficient number, since it is larger than the sum of its proper divisors (6400699).

30136445 is an equidigital number, since it uses as much as digits as its factorization.

30136445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62239.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 30136445 is about 5489.6671119477. The cubic root of 30136445 is about 311.1936119309.

Adding to 30136445 its reverse (54463103), we get a palindrome (84599548).

The spelling of 30136445 in words is "thirty million, one hundred thirty-six thousand, four hundred forty-five".