28349345 has 8 divisors (see below), whose sum is σ = 35116800. Its totient is φ = 21947760.

The previous prime is 28349339. The next prime is 28349351. The reversal of 28349345 is 54394382.

It is an interprime number because it is at equal distance from previous prime (28349339) and next prime (28349351).

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

It is not a de Polignac number, because 28349345 - 2⁸ = 28349089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28349299 and 28349308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91295 + ... + 91604.

It is an arithmetic number, because the mean of its divisors is an integer number (4389600).

Almost surely, 2^28349345 is an apocalyptic number.

It is an amenable number.

28349345 is a deficient number, since it is larger than the sum of its proper divisors (6767455).

28349345 is a wasteful number, since it uses less digits than its factorization.

28349345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182935.

The product of its digits is 103680, while the sum is 38.

The square root of 28349345 is about 5324.4102959858. The cubic root of 28349345 is about 304.9165587385.

The spelling of 28349345 in words is "twenty-eight million, three hundred forty-nine thousand, three hundred forty-five".