28285141105 has 16 divisors (see below), whose sum is σ = 36647105040. Its totient is φ = 20833774848.

The previous prime is 28285141069. The next prime is 28285141109. The reversal of 28285141105 is 50114158282.

It can be written as a sum of positive squares in 8 ways, for example, as 1180128609 + 27105012496 = 34353^2 + 164636^2 .

It is a cyclic number.

It is not a de Polignac number, because 28285141105 - 2⁷ = 28285140977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28285141109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534042 + ... + 584611.

It is an arithmetic number, because the mean of its divisors is an integer number (2290444065).

Almost surely, 2^28285141105 is an apocalyptic number.

It is an amenable number.

28285141105 is a deficient number, since it is larger than the sum of its proper divisors (8361963935).

28285141105 is a wasteful number, since it uses less digits than its factorization.

28285141105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119060.

The product of its (nonzero) digits is 25600, while the sum is 37.

Adding to 28285141105 its reverse (50114158282), we get a palindrome (78399299387).

The spelling of 28285141105 in words is "twenty-eight billion, two hundred eighty-five million, one hundred forty-one thousand, one hundred five".