27642245 has 8 divisors (see below), whose sum is σ = 34916640. Its totient is φ = 20949840.

The previous prime is 27642229. The next prime is 27642247. The reversal of 27642245 is 54224672.

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

It is not a de Polignac number, because 27642245 - 2⁴ = 27642229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27642247) 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, 145391 + ... + 145580.

It is an arithmetic number, because the mean of its divisors is an integer number (4364580).

Almost surely, 2^27642245 is an apocalyptic number.

It is an amenable number.

27642245 is a deficient number, since it is larger than the sum of its proper divisors (7274395).

27642245 is a wasteful number, since it uses less digits than its factorization.

27642245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290995.

The product of its digits is 26880, while the sum is 32.

The square root of 27642245 is about 5257.5892764650. The cubic root of 27642245 is about 302.3600700627.

The spelling of 27642245 in words is "twenty-seven million, six hundred forty-two thousand, two hundred forty-five".