27705328 has 20 divisors (see below), whose sum is σ = 61347760. Its totient is φ = 11873664.

The previous prime is 27705323. The next prime is 27705361. The reversal of 27705328 is 82350772.

It is a junction number, because it is equal to n+sod(n) for n = 27705293 and 27705302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27705323) 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, 123573 + ... + 123796.

It is an arithmetic number, because the mean of its divisors is an integer number (3067388).

Almost surely, 2^27705328 is an apocalyptic number.

27705328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27705328 is an abundant number, since it is smaller than the sum of its proper divisors (33642432).

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

27705328 is a wasteful number, since it uses less digits than its factorization.

27705328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247384 (or 247378 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 27705328 is about 5263.5850900313. The cubic root of 27705328 is about 302.5899029278.

The spelling of 27705328 in words is "twenty-seven million, seven hundred five thousand, three hundred twenty-eight".