30800005 has 8 divisors (see below), whose sum is σ = 39134232. Its totient is φ = 23190528.

The previous prime is 30799973. The next prime is 30800009. The reversal of 30800005 is 50000803.

It can be written as a sum of positive squares in 4 ways, for example, as 4524129 + 26275876 = 2127^2 + 5126^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30800005 - 2⁵ = 30799973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30800009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181092 + ... + 181261.

It is an arithmetic number, because the mean of its divisors is an integer number (4891779).

Almost surely, 2^30800005 is an apocalyptic number.

It is an amenable number.

30800005 is a deficient number, since it is larger than the sum of its proper divisors (8334227).

30800005 is a wasteful number, since it uses less digits than its factorization.

30800005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362375.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30800005 is about 5549.7752206734. The cubic root of 30800005 is about 313.4610584103.

Adding to 30800005 its reverse (50000803), we get a palindrome (80800808).

The spelling of 30800005 in words is "thirty million, eight hundred thousand, five".