27805030 has 32 divisors (see below), whose sum is σ = 57814560. Its totient is φ = 9515520.

The previous prime is 27805007. The next prime is 27805031. The reversal of 27805030 is 3050872.

It is a junction number, because it is equal to n+sod(n) for n = 27804986 and 27805004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27805031) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5565 + ... + 9304.

It is an arithmetic number, because the mean of its divisors is an integer number (1806705).

Almost surely, 2^27805030 is an apocalyptic number.

27805030 is an abundant number, since it is smaller than the sum of its proper divisors (30009530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27805030 is a wasteful number, since it uses less digits than its factorization.

27805030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14904.

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

The square root of 27805030 is about 5273.0475059495. The cubic root of 27805030 is about 302.9524409156.

The spelling of 27805030 in words is "twenty-seven million, eight hundred five thousand, thirty".