27726271240 has 16 divisors (see below), whose sum is σ = 62384110380. Its totient is φ = 11090508480.

The previous prime is 27726271231. The next prime is 27726271283. The reversal of 27726271240 is 4217262772.

It can be written as a sum of positive squares in 2 ways, for example, as 26512306276 + 1213964964 = 162826^2 + 34842^2 .

It is a super-2 number, since 2×27726271240² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 693156781 = 27726271240 / (2 + 7 + 7 + 2 + 6 + 2 + 7 + 1 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 27726271193 and 27726271202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346578351 + ... + 346578430.

Almost surely, 2^27726271240 is an apocalyptic number.

27726271240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27726271240 is an abundant number, since it is smaller than the sum of its proper divisors (34657839140).

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

27726271240 is a wasteful number, since it uses less digits than its factorization.

27726271240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693156792 (or 693156788 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 27726271240 in words is "twenty-seven billion, seven hundred twenty-six million, two hundred seventy-one thousand, two hundred forty".