28341991928 has 16 divisors (see below), whose sum is σ = 53158222080. Its totient is φ = 14166466048.

The previous prime is 28341991927. The next prime is 28341991963. The reversal of 28341991928 is 82919914382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28341991927) 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, 539576 + ... + 589767.

It is an arithmetic number, because the mean of its divisors is an integer number (3322388880).

Almost surely, 2^28341991928 is an apocalyptic number.

It is an amenable number.

28341991928 is a deficient number, since it is larger than the sum of its proper divisors (24816230152).

28341991928 is a wasteful number, since it uses less digits than its factorization.

28341991928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132486 (or 1132482 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 56.

The spelling of 28341991928 in words is "twenty-eight billion, three hundred forty-one million, nine hundred ninety-one thousand, nine hundred twenty-eight".