27795220 has 48 divisors (see below), whose sum is σ = 60899328. Its totient is φ = 10644480.

The previous prime is 27795193. The next prime is 27795223. The reversal of 27795220 is 2259772.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27795223) 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, 78564 + ... + 78916.

It is an arithmetic number, because the mean of its divisors is an integer number (1268736).

Almost surely, 2^27795220 is an apocalyptic number.

27795220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27795220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30449664).

27795220 is an abundant number, since it is smaller than the sum of its proper divisors (33104108).

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

27795220 is a wasteful number, since it uses less digits than its factorization.

27795220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 27795220 is about 5272.1172217621. The cubic root of 27795220 is about 302.9168081179.

The spelling of 27795220 in words is "twenty-seven million, seven hundred ninety-five thousand, two hundred twenty".