27227780 has 12 divisors (see below), whose sum is σ = 57178380. Its totient is φ = 10891104.

The previous prime is 27227773. The next prime is 27227789. The reversal of 27227780 is 8772272.

It can be written as a sum of positive squares in 2 ways, for example, as 9721924 + 17505856 = 3118^2 + 4184^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27227780.

It is not an unprimeable number, because it can be changed into a prime (27227789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680675 + ... + 680714.

It is an arithmetic number, because the mean of its divisors is an integer number (4764865).

Almost surely, 2^27227780 is an apocalyptic number.

27227780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27227780 is an abundant number, since it is smaller than the sum of its proper divisors (29950600).

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

27227780 is a wasteful number, since it uses less digits than its factorization.

27227780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361398 (or 1361396 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 27227780 is about 5218.0245304138. The cubic root of 27227780 is about 300.8412683165.

The spelling of 27227780 in words is "twenty-seven million, two hundred twenty-seven thousand, seven hundred eighty".