28182817 has 8 divisors (see below), whose sum is σ = 30469824. Its totient is φ = 25912848.

The previous prime is 28182769. The next prime is 28182823. The reversal of 28182817 is 71828182.

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

It is not a de Polignac number, because 28182817 - 2¹¹ = 28180769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28182857) 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, 703 + ... + 7540.

It is an arithmetic number, because the mean of its divisors is an integer number (3808728).

Almost surely, 2^28182817 is an apocalyptic number.

It is an amenable number.

28182817 is a deficient number, since it is larger than the sum of its proper divisors (2287007).

28182817 is a wasteful number, since it uses less digits than its factorization.

28182817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519.

The product of its digits is 14336, while the sum is 37.

The square root of 28182817 is about 5308.7490993642. The cubic root of 28182817 is about 304.3183451003.

The spelling of 28182817 in words is "twenty-eight million, one hundred eighty-two thousand, eight hundred seventeen".