28891763203429 has 32 divisors (see below), whose sum is σ = 33348968674560. Its totient is φ = 24518609280000.

The previous prime is 28891763203379. The next prime is 28891763203447. The reversal of 28891763203429 is 92430236719882.

It is a cyclic number.

It is not a de Polignac number, because 28891763203429 - 2³⁵ = 28857403465061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28891763200429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207038179 + ... + 207177679.

It is an arithmetic number, because the mean of its divisors is an integer number (1042155271080).

Almost surely, 2^{28891763203429} is an apocalyptic number.

It is an amenable number.

28891763203429 is a deficient number, since it is larger than the sum of its proper divisors (4457205471131).

28891763203429 is a wasteful number, since it uses less digits than its factorization.

28891763203429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140461.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 28891763203429 in words is "twenty-eight trillion, eight hundred ninety-one billion, seven hundred sixty-three million, two hundred three thousand, four hundred twenty-nine".