28820073983 has 4 divisors (see below), whose sum is σ = 28820478960. Its totient is φ = 28819669008.

The previous prime is 28820073941. The next prime is 28820073991. The reversal of 28820073983 is 38937002882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38937002882 = 2 ⋅19468501441.

It is a cyclic number.

It is not a de Polignac number, because 28820073983 - 2⁸ = 28820073727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28820073083) 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, 64310 + ... + 248547.

It is an arithmetic number, because the mean of its divisors is an integer number (7205119740).

Almost surely, 2^28820073983 is an apocalyptic number.

28820073983 is a deficient number, since it is larger than the sum of its proper divisors (404977).

28820073983 is an equidigital number, since it uses as much as digits as its factorization.

28820073983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404976.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 28820073983 in words is "twenty-eight billion, eight hundred twenty million, seventy-three thousand, nine hundred eighty-three".