27242720 has 24 divisors (see below), whose sum is σ = 64361304. Its totient is φ = 10897024.

The previous prime is 27242717. The next prime is 27242723. The reversal of 27242720 is 2724272.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27242717) and next prime (27242723).

It is a self number, because there is not a number n which added to its sum of digits gives 27242720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27242723) 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 3 ways as a sum of consecutive naturals, for example, 84974 + ... + 85293.

It is an arithmetic number, because the mean of its divisors is an integer number (2681721).

Almost surely, 2^27242720 is an apocalyptic number.

27242720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27242720 is an abundant number, since it is smaller than the sum of its proper divisors (37118584).

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

27242720 is a wasteful number, since it uses less digits than its factorization.

27242720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170282 (or 170274 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 27242720 is about 5219.4559103416. The cubic root of 27242720 is about 300.8962825549.

Adding to 27242720 its reverse (2724272), we get a palindrome (29966992).

The spelling of 27242720 in words is "twenty-seven million, two hundred forty-two thousand, seven hundred twenty".