27855030 has 64 divisors (see below), whose sum is σ = 77990400. Its totient is φ = 6364512.

The previous prime is 27855029. The next prime is 27855041. The reversal of 27855030 is 3055872.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8937 + ... + 11643.

It is an arithmetic number, because the mean of its divisors is an integer number (1218600).

Almost surely, 2^27855030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27855030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38995200).

27855030 is an abundant number, since it is smaller than the sum of its proper divisors (50135370).

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

27855030 is a wasteful number, since it uses less digits than its factorization.

27855030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 27855030 is about 5277.7864678291. The cubic root of 27855030 is about 303.1339254820.

The spelling of 27855030 in words is "twenty-seven million, eight hundred fifty-five thousand, thirty".