27427940 has 12 divisors (see below), whose sum is σ = 57598716. Its totient is φ = 10971168.

The previous prime is 27427927. The next prime is 27427943. The reversal of 27427940 is 4972472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16826404 + 10601536 = 4102^2 + 3256^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27427940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27427943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685679 + ... + 685718.

It is an arithmetic number, because the mean of its divisors is an integer number (4799893).

Almost surely, 2^27427940 is an apocalyptic number.

27427940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27427940 is an abundant number, since it is smaller than the sum of its proper divisors (30170776).

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

27427940 is a wasteful number, since it uses less digits than its factorization.

27427940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371406 (or 1371404 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 27427940 is about 5237.1690826247. The cubic root of 27427940 is about 301.5766622341.

The spelling of 27427940 in words is "twenty-seven million, four hundred twenty-seven thousand, nine hundred forty".