28293935828 has 12 divisors (see below), whose sum is σ = 49736426880. Its totient is φ = 14083528152.

The previous prime is 28293935809. The next prime is 28293935867. The reversal of 28293935828 is 82853939282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15858938 + ... + 15860721.

It is an arithmetic number, because the mean of its divisors is an integer number (4144702240).

Almost surely, 2^28293935828 is an apocalyptic number.

It is an amenable number.

28293935828 is a deficient number, since it is larger than the sum of its proper divisors (21442491052).

28293935828 is a wasteful number, since it uses less digits than its factorization.

28293935828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31719886 (or 31719884 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 59.

The spelling of 28293935828 in words is "twenty-eight billion, two hundred ninety-three million, nine hundred thirty-five thousand, eight hundred twenty-eight".