27880016 has 10 divisors (see below), whose sum is σ = 54017562. Its totient is φ = 13940000.

The previous prime is 27880003. The next prime is 27880033. The reversal of 27880016 is 61008872.

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 7268416 = 4540^2 + 2696^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 871235 + ... + 871266.

Almost surely, 2^27880016 is an apocalyptic number.

It is an amenable number.

27880016 is a deficient number, since it is larger than the sum of its proper divisors (26137546).

27880016 is a wasteful number, since it uses less digits than its factorization.

27880016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742509 (or 1742503 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 27880016 is about 5280.1530280855. The cubic root of 27880016 is about 303.2245355769.

Adding to 27880016 its reverse (61008872), we get a palindrome (88888888).

The spelling of 27880016 in words is "twenty-seven million, eight hundred eighty thousand, sixteen".