28340871 has 8 divisors (see below), whose sum is σ = 40694640. Its totient is φ = 17440512.

The previous prime is 28340861. The next prime is 28340911. The reversal of 28340871 is 17804382.

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

It is not a de Polignac number, because 28340871 - 2⁵ = 28340839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28340821) 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, 363306 + ... + 363383.

It is an arithmetic number, because the mean of its divisors is an integer number (5086830).

Almost surely, 2^28340871 is an apocalyptic number.

28340871 is a deficient number, since it is larger than the sum of its proper divisors (12353769).

28340871 is a wasteful number, since it uses less digits than its factorization.

28340871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726705.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28340871 is about 5323.6144676338. The cubic root of 28340871 is about 304.8861744926.

The spelling of 28340871 in words is "twenty-eight million, three hundred forty thousand, eight hundred seventy-one".