27703728 has 80 divisors (see below), whose sum is σ = 85654240. Its totient is φ = 8522496.

The previous prime is 27703723. The next prime is 27703747. The reversal of 27703728 is 82730772.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 27703692 and 27703701.

It is not an unprimeable number, because it can be changed into a prime (27703721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3150 + ... + 8082.

It is an arithmetic number, because the mean of its divisors is an integer number (1070678).

Almost surely, 2^27703728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27703728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42827120).

27703728 is an abundant number, since it is smaller than the sum of its proper divisors (57950512).

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

27703728 is a wasteful number, since it uses less digits than its factorization.

27703728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963 (or 4951 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 27703728 is about 5263.4331001733. The cubic root of 27703728 is about 302.5840778971.

The spelling of 27703728 in words is "twenty-seven million, seven hundred three thousand, seven hundred twenty-eight".