30172345 has 8 divisors (see below), whose sum is σ = 41379264. Its totient is φ = 20689584.

The previous prime is 30172333. The next prime is 30172349. The reversal of 30172345 is 54327103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30172345 - 2⁷ = 30172217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30172349) 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 7 ways as a sum of consecutive naturals, for example, 430999 + ... + 431068.

It is an arithmetic number, because the mean of its divisors is an integer number (5172408).

Almost surely, 2^30172345 is an apocalyptic number.

30172345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30172345 is a deficient number, since it is larger than the sum of its proper divisors (11206919).

30172345 is an equidigital number, since it uses as much as digits as its factorization.

30172345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862079.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 30172345 is about 5492.9359180679. The cubic root of 30172345 is about 311.3171325546.

Adding to 30172345 its reverse (54327103), we get a palindrome (84499448).

The spelling of 30172345 in words is "thirty million, one hundred seventy-two thousand, three hundred forty-five".