28935905087 has 4 divisors (see below), whose sum is σ = 30458847480. Its totient is φ = 27412962696.

The previous prime is 28935905077. The next prime is 28935905107. The reversal of 28935905087 is 78050953982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28935905087 - 2¹⁶ = 28935839551 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 (28935905057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761471168 + ... + 761471205.

It is an arithmetic number, because the mean of its divisors is an integer number (7614711870).

Almost surely, 2^28935905087 is an apocalyptic number.

28935905087 is a deficient number, since it is larger than the sum of its proper divisors (1522942393).

28935905087 is a wasteful number, since it uses less digits than its factorization.

28935905087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522942392.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 28935905087 in words is "twenty-eight billion, nine hundred thirty-five million, nine hundred five thousand, eighty-seven".