27920388004 has 6 divisors (see below), whose sum is σ = 48860679014. Its totient is φ = 13960194000.

The previous prime is 27920387983. The next prime is 27920388043. The reversal of 27920388004 is 40088302972.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22008315904 + 5912072100 = 148352^2 + 76890^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490048497 + ... + 3490048504.

Almost surely, 2^27920388004 is an apocalyptic number.

It is an amenable number.

27920388004 is a deficient number, since it is larger than the sum of its proper divisors (20940291010).

27920388004 is a wasteful number, since it uses less digits than its factorization.

27920388004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980097005 (or 6980097003 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 27920388004 in words is "twenty-seven billion, nine hundred twenty million, three hundred eighty-eight thousand, four".