27870801732 has 120 divisors (see below), whose sum is σ = 75379456152. Its totient is φ = 8973504000.

The previous prime is 27870801731. The next prime is 27870801769. The reversal of 27870801732 is 23710807872.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10779422976 + 17091378756 = 103824^2 + 130734^2 .

It is not an unprimeable number, because it can be changed into a prime (27870801731) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1331298 + ... + 1352070.

Almost surely, 2^27870801732 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 27870801732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37689728076).

27870801732 is an abundant number, since it is smaller than the sum of its proper divisors (47508654420).

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

27870801732 is a wasteful number, since it uses less digits than its factorization.

27870801732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20931 (or 20920 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 27870801732 in words is "twenty-seven billion, eight hundred seventy million, eight hundred one thousand, seven hundred thirty-two".