30127172 has 12 divisors (see below), whose sum is σ = 54540780. Its totient is φ = 14544096.

The previous prime is 30127157. The next prime is 30127183. The reversal of 30127172 is 27172103.

It can be written as a sum of positive squares in 2 ways, for example, as 16760836 + 13366336 = 4094^2 + 3656^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129743 + ... + 129974.

It is an arithmetic number, because the mean of its divisors is an integer number (4545065).

Almost surely, 2^30127172 is an apocalyptic number.

It is an amenable number.

30127172 is a deficient number, since it is larger than the sum of its proper divisors (24413608).

30127172 is a wasteful number, since it uses less digits than its factorization.

30127172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259750 (or 259748 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 30127172 is about 5488.8224602368. The cubic root of 30127172 is about 311.1616905105.

Adding to 30127172 its reverse (27172103), we get a palindrome (57299275).

The spelling of 30127172 in words is "thirty million, one hundred twenty-seven thousand, one hundred seventy-two".