28932156752785 has 128 divisors (see below), whose sum is σ = 41669690969088. Its totient is φ = 19006783488000.

The previous prime is 28932156752777. The next prime is 28932156752789. The reversal of 28932156752785 is 58725765123982.

It is a happy number.

It is not a de Polignac number, because 28932156752785 - 2³ = 28932156752777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28932156752789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8369149777 + ... + 8369153233.

It is an arithmetic number, because the mean of its divisors is an integer number (325544460696).

Almost surely, 2^{28932156752785} is an apocalyptic number.

It is an amenable number.

28932156752785 is a deficient number, since it is larger than the sum of its proper divisors (12737534216303).

28932156752785 is a wasteful number, since it uses less digits than its factorization.

28932156752785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475.

The product of its digits is 508032000, while the sum is 70.

The spelling of 28932156752785 in words is "twenty-eight trillion, nine hundred thirty-two billion, one hundred fifty-six million, seven hundred fifty-two thousand, seven hundred eighty-five".