30247393 has 4 divisors (see below), whose sum is σ = 32997168. Its totient is φ = 27497620.

The previous prime is 30247387. The next prime is 30247397. The reversal of 30247393 is 39374203.

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 a cyclic number.

It is not a de Polignac number, because 30247393 - 2¹³ = 30239201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30247397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1374871 + ... + 1374892.

It is an arithmetic number, because the mean of its divisors is an integer number (8249292).

Almost surely, 2^30247393 is an apocalyptic number.

It is an amenable number.

30247393 is a deficient number, since it is larger than the sum of its proper divisors (2749775).

30247393 is a wasteful number, since it uses less digits than its factorization.

30247393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749774.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 30247393 is about 5499.7629948935. The cubic root of 30247393 is about 311.5750330032.

Adding to 30247393 its product of nonzero digits (13608), we get a square (30261001 = 5501²).

The spelling of 30247393 in words is "thirty million, two hundred forty-seven thousand, three hundred ninety-three".