30172236 has 24 divisors (see below), whose sum is σ = 70700784. Its totient is φ = 10014720.

The previous prime is 30172217. The next prime is 30172237. The reversal of 30172236 is 63227103.

It is not an unprimeable number, because it can be changed into a prime (30172237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2325 + ... + 8108.

It is an arithmetic number, because the mean of its divisors is an integer number (2945866).

Almost surely, 2^30172236 is an apocalyptic number.

It is an amenable number.

30172236 is an abundant number, since it is smaller than the sum of its proper divisors (40528548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30172236 is a wasteful number, since it uses less digits than its factorization.

30172236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10681 (or 10679 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 30172236 is about 5492.9259962246. The cubic root of 30172236 is about 311.3167576682.

Adding to 30172236 its reverse (63227103), we get a palindrome (93399339).

It can be divided in two parts, 3017 and 2236, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 30172236 in words is "thirty million, one hundred seventy-two thousand, two hundred thirty-six".