30152872 has 8 divisors (see below), whose sum is σ = 56536650. Its totient is φ = 15076432.

The previous prime is 30152833. The next prime is 30152873. The reversal of 30152872 is 27825103.

It can be written as a sum of positive squares in only one way, i.e., 21473956 + 8678916 = 4634^2 + 2946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30152872.

It is not an unprimeable number, because it can be changed into a prime (30152873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1884547 + ... + 1884562.

Almost surely, 2^30152872 is an apocalyptic number.

It is an amenable number.

30152872 is a deficient number, since it is larger than the sum of its proper divisors (26383778).

30152872 is a wasteful number, since it uses less digits than its factorization.

30152872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769115 (or 3769111 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30152872 is about 5491.1630826265. The cubic root of 30152872 is about 311.2501442449.

Adding to 30152872 its reverse (27825103), we get a palindrome (57977975).

The spelling of 30152872 in words is "thirty million, one hundred fifty-two thousand, eight hundred seventy-two".