30172394 has 8 divisors (see below), whose sum is σ = 51724128. Its totient is φ = 12931020.

The previous prime is 30172379. The next prime is 30172421. The reversal of 30172394 is 49327103.

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

It is a Curzon number.

It is an unprimeable number.

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, 1077572 + ... + 1077599.

It is an arithmetic number, because the mean of its divisors is an integer number (6465516).

Almost surely, 2^30172394 is an apocalyptic number.

30172394 is a deficient number, since it is larger than the sum of its proper divisors (21551734).

30172394 is a wasteful number, since it uses less digits than its factorization.

30172394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155180.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30172394 is about 5492.9403783402. The cubic root of 30172394 is about 311.3173010812.

Adding to 30172394 its reverse (49327103), we get a palindrome (79499497).

The spelling of 30172394 in words is "thirty million, one hundred seventy-two thousand, three hundred ninety-four".