30148841 has 4 divisors (see below), whose sum is σ = 30194052. Its totient is φ = 30103632.

The previous prime is 30148831. The next prime is 30148843. The reversal of 30148841 is 14884103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14884103 = 13 ⋅1144931.

It can be written as a sum of positive squares in 2 ways, for example, as 25755625 + 4393216 = 5075^2 + 2096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30148841 is a prime.

It is a super-2 number, since 2×30148841² = 1817905227286562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30148843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21590 + ... + 22943.

It is an arithmetic number, because the mean of its divisors is an integer number (7548513).

Almost surely, 2^30148841 is an apocalyptic number.

It is an amenable number.

30148841 is a deficient number, since it is larger than the sum of its proper divisors (45211).

30148841 is an equidigital number, since it uses as much as digits as its factorization.

30148841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45210.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 30148841 is about 5490.7960260786. The cubic root of 30148841 is about 311.2362737558.

The spelling of 30148841 in words is "thirty million, one hundred forty-eight thousand, eight hundred forty-one".