27040638 has 16 divisors (see below), whose sum is σ = 54149760. Its totient is φ = 9002136.

The previous prime is 27040631. The next prime is 27040661. The reversal of 27040638 is 83604072.

It is a super-2 number, since 2×27040638² = 1462392206894088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27040631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3303 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (3384360).

Almost surely, 2^27040638 is an apocalyptic number.

27040638 is an abundant number, since it is smaller than the sum of its proper divisors (27109122).

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

27040638 is a wasteful number, since it uses less digits than its factorization.

27040638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 27040638 is about 5200.0613457920. The cubic root of 27040638 is about 300.1504356622.

The spelling of 27040638 in words is "twenty-seven million, forty thousand, six hundred thirty-eight".