30165172 has 6 divisors (see below), whose sum is σ = 52789058. Its totient is φ = 15082584.

The previous prime is 30165151. The next prime is 30165173. The reversal of 30165172 is 27156103.

It can be written as a sum of positive squares in only one way, i.e., 29311396 + 853776 = 5414^2 + 924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30165173) 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 as a sum of consecutive naturals, namely, 3770643 + ... + 3770650.

Almost surely, 2^30165172 is an apocalyptic number.

It is an amenable number.

30165172 is a deficient number, since it is larger than the sum of its proper divisors (22623886).

30165172 is a wasteful number, since it uses less digits than its factorization.

30165172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7541297 (or 7541295 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 30165172 is about 5492.2829497396. The cubic root of 30165172 is about 311.2924603504.

The spelling of 30165172 in words is "thirty million, one hundred sixty-five thousand, one hundred seventy-two".