27466640 has 20 divisors (see below), whose sum is σ = 63860124. Its totient is φ = 10986624.

The previous prime is 27466631. The next prime is 27466661. The reversal of 27466640 is 4666472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17707264 + 9759376 = 4208^2 + 3124^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 27466640.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 171587 + ... + 171746.

Almost surely, 2^27466640 is an apocalyptic number.

27466640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27466640 is an abundant number, since it is smaller than the sum of its proper divisors (36393484).

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

27466640 is a wasteful number, since it uses less digits than its factorization.

27466640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343346 (or 343340 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 27466640 is about 5240.8625244324. The cubic root of 27466640 is about 301.7184341156.

The spelling of 27466640 in words is "twenty-seven million, four hundred sixty-six thousand, six hundred forty".