30270805 has 8 divisors (see below), whose sum is σ = 36477144. Its totient is φ = 24115200.

The previous prime is 30270803. The next prime is 30270817. The reversal of 30270805 is 50807203.

It can be written as a sum of positive squares in 4 ways, for example, as 5280804 + 24990001 = 2298^2 + 4999^2 .

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

It is not a de Polignac number, because 30270805 - 2¹ = 30270803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30270805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30270803) 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, 11356 + ... + 13765.

It is an arithmetic number, because the mean of its divisors is an integer number (4559643).

Almost surely, 2^30270805 is an apocalyptic number.

It is an amenable number.

30270805 is a deficient number, since it is larger than the sum of its proper divisors (6206339).

30270805 is a wasteful number, since it uses less digits than its factorization.

30270805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25367.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 30270805 is about 5501.8910385430. The cubic root of 30270805 is about 311.6554004081.

The spelling of 30270805 in words is "thirty million, two hundred seventy thousand, eight hundred five".