27726680840 has 32 divisors (see below), whose sum is σ = 62412445080. Its totient is φ = 11085798912.

The previous prime is 27726680831. The next prime is 27726680879. The reversal of 27726680840 is 4808662772.

It can be written as a sum of positive squares in 4 ways, for example, as 11159387044 + 16567293796 = 105638^2 + 128714^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59429 + ... + 242868.

Almost surely, 2^27726680840 is an apocalyptic number.

27726680840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27726680840 is an abundant number, since it is smaller than the sum of its proper divisors (34685764240).

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

27726680840 is a wasteful number, since it uses less digits than its factorization.

27726680840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304601 (or 304597 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 27726680840 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred eighty thousand, eight hundred forty".