28343105 has 8 divisors (see below), whose sum is σ = 38870592. Its totient is φ = 19435248.

The previous prime is 28343099. The next prime is 28343111. The reversal of 28343105 is 50134382.

It is an interprime number because it is at equal distance from previous prime (28343099) and next prime (28343111).

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

It is not a de Polignac number, because 28343105 - 2²⁰ = 27294529 is a prime.

It is a Duffinian 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, 404867 + ... + 404936.

It is an arithmetic number, because the mean of its divisors is an integer number (4858824).

Almost surely, 2^28343105 is an apocalyptic number.

It is an amenable number.

28343105 is a deficient number, since it is larger than the sum of its proper divisors (10527487).

28343105 is an equidigital number, since it uses as much as digits as its factorization.

28343105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809815.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 28343105 is about 5323.8242833512. The cubic root of 28343105 is about 304.8941852769.

Adding to 28343105 its reverse (50134382), we get a palindrome (78477487).

The spelling of 28343105 in words is "twenty-eight million, three hundred forty-three thousand, one hundred five".