30172265 has 8 divisors (see below), whose sum is σ = 36246408. Its totient is φ = 24111360.

The previous prime is 30172253. The next prime is 30172271. The reversal of 30172265 is 56227103.

It can be written as a sum of positive squares in 4 ways, for example, as 7997584 + 22174681 = 2828^2 + 4709^2 .

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

It is not a de Polignac number, because 30172265 - 2⁴ = 30172249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2705 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (4530801).

Almost surely, 2^30172265 is an apocalyptic number.

It is an amenable number.

30172265 is a deficient number, since it is larger than the sum of its proper divisors (6074143).

30172265 is a wasteful number, since it uses less digits than its factorization.

30172265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30172265 is about 5492.9286359828. The cubic root of 30172265 is about 311.3168574087.

Adding to 30172265 its reverse (56227103), we get a palindrome (86399368).

The spelling of 30172265 in words is "thirty million, one hundred seventy-two thousand, two hundred sixty-five".