27728572774 has 16 divisors (see below), whose sum is σ = 47607506208. Its totient is φ = 11865471552.

The previous prime is 27728572771. The next prime is 27728572841. The reversal of 27728572774 is 47727582772.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728572771) 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, 1507407 + ... + 1525690.

It is an arithmetic number, because the mean of its divisors is an integer number (2975469138).

Almost surely, 2^27728572774 is an apocalyptic number.

27728572774 is a deficient number, since it is larger than the sum of its proper divisors (19878933434).

27728572774 is a wasteful number, since it uses less digits than its factorization.

27728572774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033759.

The product of its digits is 21512960, while the sum is 58.

The spelling of 27728572774 in words is "twenty-seven billion, seven hundred twenty-eight million, five hundred seventy-two thousand, seven hundred seventy-four".