27680628 has 48 divisors (see below), whose sum is σ = 66842496. Its totient is φ = 8910720.

The previous prime is 27680621. The next prime is 27680657. The reversal of 27680628 is 82608672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27680621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44850 + ... + 45462.

It is an arithmetic number, because the mean of its divisors is an integer number (1392552).

Almost surely, 2^27680628 is an apocalyptic number.

It is an amenable number.

27680628 is an abundant number, since it is smaller than the sum of its proper divisors (39161868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27680628 is a wasteful number, since it uses less digits than its factorization.

27680628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 27680628 is about 5261.2382572927. The cubic root of 27680628 is about 302.4999540104.

The spelling of 27680628 in words is "twenty-seven million, six hundred eighty thousand, six hundred twenty-eight".