18428395 has 8 divisors (see below), whose sum is σ = 22226400. Its totient is φ = 14667840.

The previous prime is 18428341. The next prime is 18428413. The reversal of 18428395 is 59382481.

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

It is not a de Polignac number, because 18428395 - 2¹¹ = 18426347 is a prime.

It is an unprimeable number.

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, 8266 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (2778300).

Almost surely, 2^18428395 is an apocalyptic number.

18428395 is a deficient number, since it is larger than the sum of its proper divisors (3798005).

18428395 is a wasteful number, since it uses less digits than its factorization.

18428395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18725.

The product of its digits is 69120, while the sum is 40.

The square root of 18428395 is about 4292.8306512137. The cubic root of 18428395 is about 264.1369573655.

The spelling of 18428395 in words is "eighteen million, four hundred twenty-eight thousand, three hundred ninety-five".