28077620005 has 8 divisors (see below), whose sum is σ = 33707599992. Its totient is φ = 22452458688.

The previous prime is 28077620003. The next prime is 28077620029. The reversal of 28077620005 is 50002677082.

It can be written as a sum of positive squares in 4 ways, for example, as 898140961 + 27179479044 = 29969^2 + 164862^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28077620005 - 2¹ = 28077620003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28077620003) 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, 1191834 + ... + 1215163.

It is an arithmetic number, because the mean of its divisors is an integer number (4213449999).

Almost surely, 2^28077620005 is an apocalyptic number.

It is an amenable number.

28077620005 is a deficient number, since it is larger than the sum of its proper divisors (5629979987).

28077620005 is a wasteful number, since it uses less digits than its factorization.

28077620005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409335.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 28077620005 in words is "twenty-eight billion, seventy-seven million, six hundred twenty thousand, five".