28326131 has 8 divisors (see below), whose sum is σ = 31571280. Its totient is φ = 25256448.

The previous prime is 28326091. The next prime is 28326149. The reversal of 28326131 is 13162382.

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 28326131 - 2¹⁰ = 28325107 is a prime.

It is a super-3 number, since 3×28326131³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28326131.

It is not an unprimeable number, because it can be changed into a prime (28323131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43526 + ... + 44171.

It is an arithmetic number, because the mean of its divisors is an integer number (3946410).

Almost surely, 2^28326131 is an apocalyptic number.

28326131 is a deficient number, since it is larger than the sum of its proper divisors (3245149).

28326131 is a wasteful number, since it uses less digits than its factorization.

28326131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87733.

The product of its digits is 1728, while the sum is 26.

The square root of 28326131 is about 5322.2298898112. The cubic root of 28326131 is about 304.8333085386.

The spelling of 28326131 in words is "twenty-eight million, three hundred twenty-six thousand, one hundred thirty-one".