27774120 has 128 divisors (see below), whose sum is σ = 92845440. Its totient is φ = 6589440.

The previous prime is 27774119. The next prime is 27774127. The reversal of 27774120 is 2147772.

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

It is not an unprimeable number, because it can be changed into a prime (27774127) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 69762 + ... + 70158.

It is an arithmetic number, because the mean of its divisors is an integer number (725355).

Almost surely, 2^27774120 is an apocalyptic number.

27774120 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 27774120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46422720).

27774120 is an abundant number, since it is smaller than the sum of its proper divisors (65071320).

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

27774120 is a wasteful number, since it uses less digits than its factorization.

27774120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 27774120 is about 5270.1157482545. The cubic root of 27774120 is about 302.8401383085.

The spelling of 27774120 in words is "twenty-seven million, seven hundred seventy-four thousand, one hundred twenty".