28758056061005 has 8 divisors (see below), whose sum is σ = 34512081804312. Its totient is φ = 23004835161408.

The previous prime is 28758056061001. The next prime is 28758056061083. The reversal of 28758056061005 is 50016065085782.

It is a happy number.

28758056061005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2195556391081 + 26562499669924 = 1481741^2 + 5153882^2 .

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 28758056061005 - 2² = 28758056061001 is a prime.

It is a super-2 number, since 2×28758056061005² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28758056061001) 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, 201132314 + ... + 201275243.

It is an arithmetic number, because the mean of its divisors is an integer number (4314010225539).

Almost surely, 2^{28758056061005} is an apocalyptic number.

It is an amenable number.

28758056061005 is a deficient number, since it is larger than the sum of its proper divisors (5754025743307).

28758056061005 is a wasteful number, since it uses less digits than its factorization.

28758056061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402421855.

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 28758056061005 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, sixty-one thousand, five".