27783642 has 8 divisors (see below), whose sum is σ = 55567296. Its totient is φ = 9261212.

The previous prime is 27783641. The next prime is 27783647. The reversal of 27783642 is 24638772.

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

27783642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 27783642.

It is not an unprimeable number, because it can be changed into a prime (27783641) 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, 2315298 + ... + 2315309.

It is an arithmetic number, because the mean of its divisors is an integer number (6945912).

Almost surely, 2^27783642 is an apocalyptic number.

27783642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27783642 is a wasteful number, since it uses less digits than its factorization.

27783642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630612.

The product of its digits is 112896, while the sum is 39.

The square root of 27783642 is about 5271.0190665563. The cubic root of 27783642 is about 302.8747426370.

The spelling of 27783642 in words is "twenty-seven million, seven hundred eighty-three thousand, six hundred forty-two".