27726209428 has 24 divisors (see below), whose sum is σ = 49131266688. Its totient is φ = 13688880576.

The previous prime is 27726209389. The next prime is 27726209429. The reversal of 27726209428 is 82490262772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27726209429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640725 + ... + 682627.

It is an arithmetic number, because the mean of its divisors is an integer number (2047136112).

Almost surely, 2^27726209428 is an apocalyptic number.

It is an amenable number.

27726209428 is a deficient number, since it is larger than the sum of its proper divisors (21405057260).

27726209428 is a wasteful number, since it uses less digits than its factorization.

27726209428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43983 (or 43981 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 27726209428 in words is "twenty-seven billion, seven hundred twenty-six million, two hundred nine thousand, four hundred twenty-eight".