27661442 has 16 divisors (see below), whose sum is σ = 43001280. Its totient is φ = 13336752.

The previous prime is 27661411. The next prime is 27661471. The reversal of 27661442 is 24416672.

It is a junction number, because it is equal to n+sod(n) for n = 27661399 and 27661408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4043 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (2687580).

Almost surely, 2^27661442 is an apocalyptic number.

27661442 is a deficient number, since it is larger than the sum of its proper divisors (15339838).

27661442 is a wasteful number, since it uses less digits than its factorization.

27661442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537.

The product of its digits is 16128, while the sum is 32.

The square root of 27661442 is about 5259.4146062086. The cubic root of 27661442 is about 302.4300482562.

The spelling of 27661442 in words is "twenty-seven million, six hundred sixty-one thousand, four hundred forty-two".