27990748060 has 96 divisors (see below), whose sum is σ = 64547062272. Its totient is φ = 10111614720.

The previous prime is 27990748039. The next prime is 27990748087. The reversal of 27990748060 is 6084709972.

It is a junction number, because it is equal to n+sod(n) for n = 27990747989 and 27990748007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28474329 + ... + 28475311.

It is an arithmetic number, because the mean of its divisors is an integer number (672365232).

Almost surely, 2^27990748060 is an apocalyptic number.

27990748060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27990748060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32273531136).

27990748060 is an abundant number, since it is smaller than the sum of its proper divisors (36556314212).

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

27990748060 is a wasteful number, since it uses less digits than its factorization.

27990748060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 27990748060 in words is "twenty-seven billion, nine hundred ninety million, seven hundred forty-eight thousand, sixty".