27800030 has 16 divisors (see below), whose sum is σ = 51105600. Its totient is φ = 10883232.

The previous prime is 27799999. The next prime is 27800051. The reversal of 27800030 is 3000872.

It is a junction number, because it is equal to n+sod(n) for n = 27799975 and 27800011.

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 7 ways as a sum of consecutive naturals, for example, 29105 + ... + 30044.

It is an arithmetic number, because the mean of its divisors is an integer number (3194100).

Almost surely, 2^27800030 is an apocalyptic number.

27800030 is a deficient number, since it is larger than the sum of its proper divisors (23305570).

27800030 is a wasteful number, since it uses less digits than its factorization.

27800030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59203.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 27800030 is about 5272.5733754970. The cubic root of 27800030 is about 302.9342804963.

The spelling of 27800030 in words is "twenty-seven million, eight hundred thousand, thirty".