27822240 has 108 divisors (see below), whose sum is σ = 95631354. Its totient is φ = 7365888.

The previous prime is 27822239. The next prime is 27822241. The reversal of 27822240 is 4222872.

It is an interprime number because it is at equal distance from previous prime (27822239) and next prime (27822241).

It can be written as a sum of positive squares in only one way, i.e., 25040016 + 2782224 = 5004^2 + 1668^2 .

It is not an unprimeable number, because it can be changed into a prime (27822241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 200091 + ... + 200229.

Almost surely, 2^27822240 is an apocalyptic number.

27822240 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 27822240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47815677).

27822240 is an abundant number, since it is smaller than the sum of its proper divisors (67809114).

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

27822240 is a wasteful number, since it uses less digits than its factorization.

27822240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 27822240 is about 5274.6791371609. The cubic root of 27822240 is about 303.0149324406.

The spelling of 27822240 in words is "twenty-seven million, eight hundred twenty-two thousand, two hundred forty".