28231907005 has 8 divisors (see below), whose sum is σ = 34178096952. Its totient is φ = 22385653248.

The previous prime is 28231906999. The next prime is 28231907027. The reversal of 28231907005 is 50070913282.

It can be written as a sum of positive squares in 4 ways, for example, as 1785992121 + 26445914884 = 42261^2 + 162622^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28231907005 - 2⁵ = 28231906973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24983424 + ... + 24984553.

It is an arithmetic number, because the mean of its divisors is an integer number (4272262119).

Almost surely, 2^28231907005 is an apocalyptic number.

It is an amenable number.

28231907005 is a deficient number, since it is larger than the sum of its proper divisors (5946189947).

28231907005 is a wasteful number, since it uses less digits than its factorization.

28231907005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49968095.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 28231907005 in words is "twenty-eight billion, two hundred thirty-one million, nine hundred seven thousand, five".