27728422 has 8 divisors (see below), whose sum is σ = 41650272. Its totient is φ = 13845000.

The previous prime is 27728417. The next prime is 27728431. The reversal of 27728422 is 22482772.

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

It is a super-2 number, since 2×27728422² = 1537730773220168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7729 + ... + 10732.

It is an arithmetic number, because the mean of its divisors is an integer number (5206284).

Almost surely, 2^27728422 is an apocalyptic number.

27728422 is a deficient number, since it is larger than the sum of its proper divisors (13921850).

27728422 is a wasteful number, since it uses less digits than its factorization.

27728422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19214.

The product of its digits is 25088, while the sum is 34.

The square root of 27728422 is about 5265.7783850063. The cubic root of 27728422 is about 302.6739549975.

The spelling of 27728422 in words is "twenty-seven million, seven hundred twenty-eight thousand, four hundred twenty-two".