30193145 has 4 divisors (see below), whose sum is σ = 36231780. Its totient is φ = 24154512.

The previous prime is 30193133. The next prime is 30193151. The reversal of 30193145 is 54139103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54139103 = 37 ⋅1463219.

It can be written as a sum of positive squares in 2 ways, for example, as 6651241 + 23541904 = 2579^2 + 4852^2 .

It is a cyclic number.

It is not a de Polignac number, because 30193145 - 2⁸ = 30192889 is a prime.

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, 3019310 + ... + 3019319.

It is an arithmetic number, because the mean of its divisors is an integer number (9057945).

Almost surely, 2^30193145 is an apocalyptic number.

It is an amenable number.

30193145 is a deficient number, since it is larger than the sum of its proper divisors (6038635).

30193145 is an equidigital number, since it uses as much as digits as its factorization.

30193145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6038634.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30193145 is about 5494.8289327330. The cubic root of 30193145 is about 311.3886539974.

The spelling of 30193145 in words is "thirty million, one hundred ninety-three thousand, one hundred forty-five".