30815272 has 16 divisors (see below), whose sum is σ = 59188500. Its totient is φ = 15031680.

The previous prime is 30815269. The next prime is 30815299. The reversal of 30815272 is 27251803.

It can be written as a sum of positive squares in 2 ways, for example, as 29746116 + 1069156 = 5454^2 + 1034^2 .

It is a super-3 number, since 3×30815272³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30815272.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 46647 + ... + 47302.

Almost surely, 2^30815272 is an apocalyptic number.

It is an amenable number.

30815272 is a deficient number, since it is larger than the sum of its proper divisors (28373228).

30815272 is a wasteful number, since it uses less digits than its factorization.

30815272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93996 (or 93992 counting only the distinct ones).

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

The square root of 30815272 is about 5551.1505113805. The cubic root of 30815272 is about 313.5128421625.

The spelling of 30815272 in words is "thirty million, eight hundred fifteen thousand, two hundred seventy-two".