27740631 has 4 divisors (see below), whose sum is σ = 36987512. Its totient is φ = 18493752.

The previous prime is 27740621. The next prime is 27740683. The reversal of 27740631 is 13604772.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27740631 - 2²³ = 19352023 is a prime.

It is a super-2 number, since 2×27740631² = 1539085216556322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27740621) 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, 4623436 + ... + 4623441.

It is an arithmetic number, because the mean of its divisors is an integer number (9246878).

Almost surely, 2^27740631 is an apocalyptic number.

27740631 is a deficient number, since it is larger than the sum of its proper divisors (9246881).

27740631 is an equidigital number, since it uses as much as digits as its factorization.

27740631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246880.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 27740631 is about 5266.9375352286. The cubic root of 27740631 is about 302.7183715663.

The spelling of 27740631 in words is "twenty-seven million, seven hundred forty thousand, six hundred thirty-one".