28124228605 has 8 divisors (see below), whose sum is σ = 36817172064. Its totient is φ = 20453984400.

The previous prime is 28124228603. The next prime is 28124228617. The reversal of 28124228605 is 50682242182.

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

It is not a de Polignac number, because 28124228605 - 2¹ = 28124228603 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 (28124228603) 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, 255674751 + ... + 255674860.

It is an arithmetic number, because the mean of its divisors is an integer number (4602146508).

Almost surely, 2^28124228605 is an apocalyptic number.

It is an amenable number.

28124228605 is a deficient number, since it is larger than the sum of its proper divisors (8692943459).

28124228605 is a wasteful number, since it uses less digits than its factorization.

28124228605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511349627.

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 28124228605 in words is "twenty-eight billion, one hundred twenty-four million, two hundred twenty-eight thousand, six hundred five".