27620816 has 20 divisors (see below), whose sum is σ = 53992452. Its totient is φ = 13687296.

The previous prime is 27620807. The next prime is 27620821. The reversal of 27620816 is 61802672.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 26419600 = 1096^2 + 5140^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5831 + ... + 9446.

Almost surely, 2^27620816 is an apocalyptic number.

It is an amenable number.

27620816 is a deficient number, since it is larger than the sum of its proper divisors (26371636).

27620816 is a wasteful number, since it uses less digits than its factorization.

27620816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15398 (or 15392 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 27620816 is about 5255.5509701648. The cubic root of 27620816 is about 302.2819173540.

The spelling of 27620816 in words is "twenty-seven million, six hundred twenty thousand, eight hundred sixteen".