28336668231 has 8 divisors (see below), whose sum is σ = 37825016320. Its totient is φ = 18869716152.

The previous prime is 28336668221. The next prime is 28336668289. The reversal of 28336668231 is 13286663382.

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

It is a de Polignac number, because none of the positive numbers 2^k-28336668231 is a prime.

It is a super-2 number, since 2×28336668231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28336668221) 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, 5345911 + ... + 5351208.

It is an arithmetic number, because the mean of its divisors is an integer number (4728127040).

Almost surely, 2^28336668231 is an apocalyptic number.

28336668231 is a deficient number, since it is larger than the sum of its proper divisors (9488348089).

28336668231 is a wasteful number, since it uses less digits than its factorization.

28336668231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10698005.

The product of its digits is 1492992, while the sum is 48.

The spelling of 28336668231 in words is "twenty-eight billion, three hundred thirty-six million, six hundred sixty-eight thousand, two hundred thirty-one".