27945616 has 10 divisors (see below), whose sum is σ = 54144662. Its totient is φ = 13972800.

The previous prime is 27945611. The next prime is 27945629. The reversal of 27945616 is 61654972.

It can be written as a sum of positive squares in only one way, i.e., 21715600 + 6230016 = 4660^2 + 2496^2 .

It is a super-3 number, since 3×27945616³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (27945611) by changing a digit.

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, 873285 + ... + 873316.

Almost surely, 2^27945616 is an apocalyptic number.

It is an amenable number.

27945616 is a deficient number, since it is larger than the sum of its proper divisors (26199046).

27945616 is a wasteful number, since it uses less digits than its factorization.

27945616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746609 (or 1746603 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 27945616 is about 5286.3613194711. The cubic root of 27945616 is about 303.4621723212.

It can be divided in two parts, 27945 and 616, that added together give a 4-th power (28561 = 13⁴).

The spelling of 27945616 in words is "twenty-seven million, nine hundred forty-five thousand, six hundred sixteen".