28956770193 has 32 divisors (see below), whose sum is σ = 43133126400. Its totient is φ = 17156918016.

The previous prime is 28956770099. The next prime is 28956770201. The reversal of 28956770193 is 39107765982.

It is not a de Polignac number, because 28956770193 - 2¹⁰ = 28956769169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28956775193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370371 + ... + 441687.

It is an arithmetic number, because the mean of its divisors is an integer number (1347910200).

Almost surely, 2^28956770193 is an apocalyptic number.

It is an amenable number.

28956770193 is a deficient number, since it is larger than the sum of its proper divisors (14176356207).

28956770193 is a wasteful number, since it uses less digits than its factorization.

28956770193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71721.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 28956770193 in words is "twenty-eight billion, nine hundred fifty-six million, seven hundred seventy thousand, one hundred ninety-three".