30145263 has 4 divisors (see below), whose sum is σ = 40193688. Its totient is φ = 20096840.

The previous prime is 30145261. The next prime is 30145273. The reversal of 30145263 is 36254103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36254103 = 3 ⋅12084701.

It is a cyclic number.

It is not a de Polignac number, because 30145263 - 2¹ = 30145261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5024208 + ... + 5024213.

It is an arithmetic number, because the mean of its divisors is an integer number (10048422).

Almost surely, 2^30145263 is an apocalyptic number.

30145263 is a deficient number, since it is larger than the sum of its proper divisors (10048425).

30145263 is a wasteful number, since it uses less digits than its factorization.

30145263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10048424.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 30145263 is about 5490.4701984438. The cubic root of 30145263 is about 311.2239609835.

Adding to 30145263 its reverse (36254103), we get a palindrome (66399366).

The spelling of 30145263 in words is "thirty million, one hundred forty-five thousand, two hundred sixty-three".