30284872 has 16 divisors (see below), whose sum is σ = 56856060. Its totient is φ = 15123264.

The previous prime is 30284867. The next prime is 30284897. The reversal of 30284872 is 27848203.

It can be written as a sum of positive squares in 2 ways, for example, as 29746116 + 538756 = 5454^2 + 734^2 .

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, 6078 + ... + 9874.

Almost surely, 2^30284872 is an apocalyptic number.

It is an amenable number.

30284872 is a deficient number, since it is larger than the sum of its proper divisors (26571188).

30284872 is a wasteful number, since it uses less digits than its factorization.

30284872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 4796 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 30284872 is about 5503.1692687033. The cubic root of 30284872 is about 311.7036688920.

The spelling of 30284872 in words is "thirty million, two hundred eighty-four thousand, eight hundred seventy-two".