30172269 has 24 divisors (see below), whose sum is σ = 42785536. Its totient is φ = 18892800.

The previous prime is 30172253. The next prime is 30172271. The reversal of 30172269 is 96227103.

It is not a de Polignac number, because 30172269 - 2⁴ = 30172253 is a prime.

It is a super-2 number, since 2×30172269² = 1820731633216722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30172249) 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 23 ways as a sum of consecutive naturals, for example, 156237 + ... + 156429.

Almost surely, 2^30172269 is an apocalyptic number.

It is an amenable number.

30172269 is a deficient number, since it is larger than the sum of its proper divisors (12613267).

30172269 is a wasteful number, since it uses less digits than its factorization.

30172269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 30172269 is about 5492.9290000873. The cubic root of 30172269 is about 311.3168711660.

The spelling of 30172269 in words is "thirty million, one hundred seventy-two thousand, two hundred sixty-nine".