30211172 has 6 divisors (see below), whose sum is σ = 52869558. Its totient is φ = 15105584.

The previous prime is 30211151. The next prime is 30211183. The reversal of 30211172 is 27111203.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 10086976 = 4486^2 + 3176^2 .

It is a super-2 number, since 2×30211172² = 1825429827227168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30211172.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3776393 + ... + 3776400.

It is an arithmetic number, because the mean of its divisors is an integer number (8811593).

Almost surely, 2^30211172 is an apocalyptic number.

It is an amenable number.

30211172 is a deficient number, since it is larger than the sum of its proper divisors (22658386).

30211172 is a wasteful number, since it uses less digits than its factorization.

30211172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7552797 (or 7552795 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 30211172 is about 5496.4690483983. The cubic root of 30211172 is about 311.4506138282.

Adding to 30211172 its reverse (27111203), we get a palindrome (57322375).

The spelling of 30211172 in words is "thirty million, two hundred eleven thousand, one hundred seventy-two".