20395678 has 8 divisors (see below), whose sum is σ = 30630672. Its totient is φ = 10185456.

The previous prime is 20395657. The next prime is 20395681. The reversal of 20395678 is 87659302.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20395678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975 + ... + 7522.

It is an arithmetic number, because the mean of its divisors is an integer number (3828834).

Almost surely, 2^20395678 is an apocalyptic number.

20395678 is a deficient number, since it is larger than the sum of its proper divisors (10234994).

20395678 is a wasteful number, since it uses less digits than its factorization.

20395678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12386.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 20395678 is about 4516.1574374683. The cubic root of 20395678 is about 273.2201438272.

The spelling of 20395678 in words is "twenty million, three hundred ninety-five thousand, six hundred seventy-eight".