27640994 has 8 divisors (see below), whose sum is σ = 41986560. Its totient is φ = 13645476.

The previous prime is 27640993. The next prime is 27641017. The reversal of 27640994 is 49904672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (27640993) 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 3 ways as a sum of consecutive naturals, for example, 87314 + ... + 87629.

It is an arithmetic number, because the mean of its divisors is an integer number (5248320).

Almost surely, 2^27640994 is an apocalyptic number.

27640994 is a deficient number, since it is larger than the sum of its proper divisors (14345566).

27640994 is a wasteful number, since it uses less digits than its factorization.

27640994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175024.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 27640994 is about 5257.4703042433. The cubic root of 27640994 is about 302.3555087092.

The spelling of 27640994 in words is "twenty-seven million, six hundred forty thousand, nine hundred ninety-four".