27452740 has 72 divisors (see below), whose sum is σ = 67941720. Its totient is φ = 9289728.

The previous prime is 27452707. The next prime is 27452743. The reversal of 27452740 is 4725472.

It can be written as a sum of positive squares in 4 ways, for example, as 12845056 + 14607684 = 3584^2 + 3822^2 .

It is not an unprimeable number, because it can be changed into a prime (27452743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106692 + ... + 106948.

It is an arithmetic number, because the mean of its divisors is an integer number (943635).

Almost surely, 2^27452740 is an apocalyptic number.

27452740 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 27452740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33970860).

27452740 is an abundant number, since it is smaller than the sum of its proper divisors (40488980).

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

27452740 is a wasteful number, since it uses less digits than its factorization.

27452740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 27452740 is about 5239.5362390196. The cubic root of 27452740 is about 301.6675288004.

The spelling of 27452740 in words is "twenty-seven million, four hundred fifty-two thousand, seven hundred forty".