27690442 has 8 divisors (see below), whose sum is σ = 44730756. Its totient is φ = 12780192.

The previous prime is 27690427. The next prime is 27690449. The reversal of 27690442 is 24409672.

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 12321 = 5261^2 + 111^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 27690398 and 27690407.

It is not an unprimeable number, because it can be changed into a prime (27690449) 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, 532483 + ... + 532534.

Almost surely, 2^27690442 is an apocalyptic number.

27690442 is a deficient number, since it is larger than the sum of its proper divisors (17040314).

27690442 is a wasteful number, since it uses less digits than its factorization.

27690442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065032.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 27690442 is about 5262.1708448130. The cubic root of 27690442 is about 302.5356996321.

The spelling of 27690442 in words is "twenty-seven million, six hundred ninety thousand, four hundred forty-two".