27481687 has 12 divisors (see below), whose sum is σ = 28622160. Its totient is φ = 26382048.

The previous prime is 27481679. The next prime is 27481703. The reversal of 27481687 is 78618472.

It is not a de Polignac number, because 27481687 - 2³ = 27481679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27481607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164478 + ... + 164644.

It is an arithmetic number, because the mean of its divisors is an integer number (2385180).

Almost surely, 2^27481687 is an apocalyptic number.

27481687 is a deficient number, since it is larger than the sum of its proper divisors (1140473).

27481687 is an equidigital number, since it uses as much as digits as its factorization.

27481687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 299 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 27481687 is about 5242.2978740243. The cubic root of 27481687 is about 301.7735206799.

The spelling of 27481687 in words is "twenty-seven million, four hundred eighty-one thousand, six hundred eighty-seven".