30523172 has 6 divisors (see below), whose sum is σ = 53415558. Its totient is φ = 15261584.

The previous prime is 30523169. The next prime is 30523201. The reversal of 30523172 is 27132503.

It can be written as a sum of positive squares in only one way, i.e., 25969216 + 4553956 = 5096^2 + 2134^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3815393 + ... + 3815400.

It is an arithmetic number, because the mean of its divisors is an integer number (8902593).

Almost surely, 2^30523172 is an apocalyptic number.

It is an amenable number.

30523172 is a deficient number, since it is larger than the sum of its proper divisors (22892386).

30523172 is a wasteful number, since it uses less digits than its factorization.

30523172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630797 (or 7630795 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 30523172 is about 5524.7780045899. The cubic root of 30523172 is about 312.5190925935.

Adding to 30523172 its reverse (27132503), we get a palindrome (57655675).

The spelling of 30523172 in words is "thirty million, five hundred twenty-three thousand, one hundred seventy-two".