27752673728 has 56 divisors (see below), whose sum is σ = 59606383200. Its totient is φ = 12744483840.

The previous prime is 27752673727. The next prime is 27752673761. The reversal of 27752673728 is 82737625772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27752673727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81758 + ... + 249378.

It is an arithmetic number, because the mean of its divisors is an integer number (1064399700).

Almost surely, 2^27752673728 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 27752673728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29803191600).

27752673728 is an abundant number, since it is smaller than the sum of its proper divisors (31853709472).

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

27752673728 is a wasteful number, since it uses less digits than its factorization.

27752673728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167845 (or 167835 counting only the distinct ones).

The product of its digits is 13829760, while the sum is 56.

The spelling of 27752673728 in words is "twenty-seven billion, seven hundred fifty-two million, six hundred seventy-three thousand, seven hundred twenty-eight".