30145449 has 4 divisors (see below), whose sum is σ = 40193936. Its totient is φ = 20096964.

The previous prime is 30145447. The next prime is 30145469. The reversal of 30145449 is 94454103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30145449 - 2¹ = 30145447 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30145447) 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 3 ways as a sum of consecutive naturals, for example, 5024239 + ... + 5024244.

It is an arithmetic number, because the mean of its divisors is an integer number (10048484).

Almost surely, 2^30145449 is an apocalyptic number.

It is an amenable number.

30145449 is a deficient number, since it is larger than the sum of its proper divisors (10048487).

30145449 is a wasteful number, since it uses less digits than its factorization.

30145449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10048486.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 30145449 is about 5490.4871368577. The cubic root of 30145449 is about 311.2246010790.

The spelling of 30145449 in words is "thirty million, one hundred forty-five thousand, four hundred forty-nine".