30272005 has 16 divisors (see below), whose sum is σ = 37098864. Its totient is φ = 23708160.

The previous prime is 30271991. The next prime is 30272017. The reversal of 30272005 is 50027203.

It is a happy number.

It is a Cunningham number, because it is equal to 5502²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 164836 + 30107169 = 406^2 + 5487^2 .

It is not a de Polignac number, because 30272005 - 2⁵ = 30271973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71695 + ... + 72115.

It is an arithmetic number, because the mean of its divisors is an integer number (2318679).

Almost surely, 2^30272005 is an apocalyptic number.

It is an amenable number.

30272005 is a deficient number, since it is larger than the sum of its proper divisors (6826859).

30272005 is a wasteful number, since it uses less digits than its factorization.

30272005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 30272005 is about 5502.0000908760. Note that the first 4 decimals coincide. The cubic root of 30272005 is about 311.6595185844.

Adding to 30272005 its reverse (50027203), we get a palindrome (80299208).

The spelling of 30272005 in words is "thirty million, two hundred seventy-two thousand, five".