30133172 has 6 divisors (see below), whose sum is σ = 52733058. Its totient is φ = 15066584.

The previous prime is 30133171. The next prime is 30133189. The reversal of 30133172 is 27133103.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26275876 + 3857296 = 5126^2 + 1964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30133171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3766643 + ... + 3766650.

It is an arithmetic number, because the mean of its divisors is an integer number (8788843).

Almost surely, 2^30133172 is an apocalyptic number.

It is an amenable number.

30133172 is a deficient number, since it is larger than the sum of its proper divisors (22599886).

30133172 is a wasteful number, since it uses less digits than its factorization.

30133172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533297 (or 7533295 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 30133172 is about 5489.3689983458. The cubic root of 30133172 is about 311.1823456875.

Adding to 30133172 its reverse (27133103), we get a palindrome (57266275).

The spelling of 30133172 in words is "thirty million, one hundred thirty-three thousand, one hundred seventy-two".