27726868828 has 48 divisors (see below), whose sum is σ = 54212639040. Its totient is φ = 12340342784.

The previous prime is 27726868823. The next prime is 27726868831. The reversal of 27726868828 is 82886862772.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27726868828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27726868823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39600 + ... + 238792.

It is an arithmetic number, because the mean of its divisors is an integer number (1129429980).

Almost surely, 2^27726868828 is an apocalyptic number.

It is an amenable number.

27726868828 is a deficient number, since it is larger than the sum of its proper divisors (26485770212).

27726868828 is a wasteful number, since it uses less digits than its factorization.

27726868828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199326 (or 199324 counting only the distinct ones).

The product of its digits is 57802752, while the sum is 64.

The spelling of 27726868828 in words is "twenty-seven billion, seven hundred twenty-six million, eight hundred sixty-eight thousand, eight hundred twenty-eight".