28507276205 has 16 divisors (see below), whose sum is σ = 35497156608. Its totient is φ = 21954576000.

The previous prime is 28507276201. The next prime is 28507276219. The reversal of 28507276205 is 50267270582.

It is not a de Polignac number, because 28507276205 - 2² = 28507276201 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28507276201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451856 + ... + 511065.

It is an arithmetic number, because the mean of its divisors is an integer number (2218572288).

Almost surely, 2^28507276205 is an apocalyptic number.

It is an amenable number.

28507276205 is a deficient number, since it is larger than the sum of its proper divisors (6989880403).

28507276205 is a wasteful number, since it uses less digits than its factorization.

28507276205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963148.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 28507276205 in words is "twenty-eight billion, five hundred seven million, two hundred seventy-six thousand, two hundred five".