27745642 has 8 divisors (see below), whose sum is σ = 41664996. Its totient is φ = 13857312.

The previous prime is 27745639. The next prime is 27745687. The reversal of 27745642 is 24654772.

It can be written as a sum of positive squares in 2 ways, for example, as 26327161 + 1418481 = 5131^2 + 1191^2 .

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

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, 5373 + ... + 9184.

Almost surely, 2^27745642 is an apocalyptic number.

27745642 is a deficient number, since it is larger than the sum of its proper divisors (13919354).

27745642 is a wasteful number, since it uses less digits than its factorization.

27745642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15512.

The product of its digits is 94080, while the sum is 37.

The square root of 27745642 is about 5267.4132171304. The cubic root of 27745642 is about 302.7365979053.

The spelling of 27745642 in words is "twenty-seven million, seven hundred forty-five thousand, six hundred forty-two".