30189545 has 4 divisors (see below), whose sum is σ = 36227460. Its totient is φ = 24151632.

The previous prime is 30189529. The next prime is 30189559. The reversal of 30189545 is 54598103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 16410601 = 3712^2 + 4051^2 .

It is a cyclic number.

It is not a de Polignac number, because 30189545 - 2⁴ = 30189529 is a prime.

It is a super-2 number, since 2×30189545² = 1822817254614050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018950 + ... + 3018959.

It is an arithmetic number, because the mean of its divisors is an integer number (9056865).

Almost surely, 2^30189545 is an apocalyptic number.

It is an amenable number.

30189545 is a deficient number, since it is larger than the sum of its proper divisors (6037915).

30189545 is an equidigital number, since it uses as much as digits as its factorization.

30189545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037914.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 30189545 is about 5494.5013422512. The cubic root of 30189545 is about 311.3762776372.

The spelling of 30189545 in words is "thirty million, one hundred eighty-nine thousand, five hundred forty-five".