28856011223 has 8 divisors (see below), whose sum is σ = 31116550416. Its totient is φ = 26601307200.

The previous prime is 28856011207. The next prime is 28856011229. The reversal of 28856011223 is 32211065882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28856011223 - 2⁴ = 28856011207 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 (28856011229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448513 + ... + 1468298.

It is an arithmetic number, because the mean of its divisors is an integer number (3889568802).

Almost surely, 2^28856011223 is an apocalyptic number.

28856011223 is a deficient number, since it is larger than the sum of its proper divisors (2260539193).

28856011223 is a wasteful number, since it uses less digits than its factorization.

28856011223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917585.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 28856011223 in words is "twenty-eight billion, eight hundred fifty-six million, eleven thousand, two hundred twenty-three".