27731426772 has 48 divisors (see below), whose sum is σ = 74245151232. Its totient is φ = 7891692000.

The previous prime is 27731426771. The next prime is 27731426809. The reversal of 27731426772 is 27762413772.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27731426771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636558 + ... + 678725.

It is an arithmetic number, because the mean of its divisors is an integer number (1546773984).

Almost surely, 2^27731426772 is an apocalyptic number.

It is an amenable number.

27731426772 is an abundant number, since it is smaller than the sum of its proper divisors (46513724460).

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

27731426772 is a wasteful number, since it uses less digits than its factorization.

27731426772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315548 (or 1315546 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 48.

The spelling of 27731426772 in words is "twenty-seven billion, seven hundred thirty-one million, four hundred twenty-six thousand, seven hundred seventy-two".