20163386 has 8 divisors (see below), whose sum is σ = 30466260. Its totient is φ = 10007968.

The previous prime is 20163359. The next prime is 20163397. The reversal of 20163386 is 68336102.

It can be written as a sum of positive squares in 2 ways, for example, as 19193161 + 970225 = 4381^2 + 985^2 .

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

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, 36521 + ... + 37068.

Almost surely, 2^20163386 is an apocalyptic number.

20163386 is a deficient number, since it is larger than the sum of its proper divisors (10302874).

20163386 is a wasteful number, since it uses less digits than its factorization.

20163386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73728.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20163386 is about 4490.3659093664. The cubic root of 20163386 is about 272.1789209914.

Adding to 20163386 its reverse (68336102), we get a palindrome (88499488).

The spelling of 20163386 in words is "twenty million, one hundred sixty-three thousand, three hundred eighty-six".