27026640 has 60 divisors (see below), whose sum is σ = 90766884. Its totient is φ = 7206912.

The previous prime is 27026621. The next prime is 27026641. The reversal of 27026640 is 4662072.

It can be written as a sum of positive squares in 2 ways, for example, as 10575504 + 16451136 = 3252^2 + 4056^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27026641) 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 11 ways as a sum of consecutive naturals, for example, 18049 + ... + 19488.

Almost surely, 2^27026640 is an apocalyptic number.

27026640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27026640 is an abundant number, since it is smaller than the sum of its proper divisors (63740244).

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

27026640 is a wasteful number, since it uses less digits than its factorization.

27026640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37556 (or 37547 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 27026640 is about 5198.7152258996. The cubic root of 27026640 is about 300.0986342341.

The spelling of 27026640 in words is "twenty-seven million, twenty-six thousand, six hundred forty".