27728573004 has 72 divisors (see below), whose sum is σ = 78530267088. Its totient is φ = 8175496320.

The previous prime is 27728573003. The next prime is 27728573009. The reversal of 27728573004 is 40037582772.

27728573004 is a `hidden beast` number, since 2 + 7 + 72 + 8 + 573 + 0 + 0 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (27728573003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 931587 + ... + 960890.

It is an arithmetic number, because the mean of its divisors is an integer number (1090698154).

Almost surely, 2^27728573004 is an apocalyptic number.

It is an amenable number.

27728573004 is an abundant number, since it is smaller than the sum of its proper divisors (50801694084).

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

27728573004 is a wasteful number, since it uses less digits than its factorization.

27728573004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892535 (or 1892530 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The spelling of 27728573004 in words is "twenty-seven billion, seven hundred twenty-eight million, five hundred seventy-three thousand, four".