27223240 has 32 divisors (see below), whose sum is σ = 66821760. Its totient is φ = 9899200.

The previous prime is 27223223. The next prime is 27223247. The reversal of 27223240 is 4232272.

It is a super-2 number, since 2×27223240² = 1482209592195200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (27223247) 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 7 ways as a sum of consecutive naturals, for example, 30496 + ... + 31375.

It is an arithmetic number, because the mean of its divisors is an integer number (2088180).

Almost surely, 2^27223240 is an apocalyptic number.

27223240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27223240 is an abundant number, since it is smaller than the sum of its proper divisors (39598520).

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

27223240 is a wasteful number, since it uses less digits than its factorization.

27223240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61893 (or 61889 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 27223240 is about 5217.5894817435. The cubic root of 27223240 is about 300.8245464822.

It can be divided in two parts, 272232 and 40, that added together give a palindrome (272272).

The spelling of 27223240 in words is "twenty-seven million, two hundred twenty-three thousand, two hundred forty".