20104386 has 16 divisors (see below), whose sum is σ = 40301184. Its totient is φ = 6686064.

The previous prime is 20104379. The next prime is 20104393. The reversal of 20104386 is 68340102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20104379) and next prime (20104393).

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, 841 + ... + 6396.

It is an arithmetic number, because the mean of its divisors is an integer number (2518824).

Almost surely, 2^20104386 is an apocalyptic number.

20104386 is an abundant number, since it is smaller than the sum of its proper divisors (20196798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20104386 is a wasteful number, since it uses less digits than its factorization.

20104386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7705.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20104386 is about 4483.7914759721. The cubic root of 20104386 is about 271.9131877657.

Adding to 20104386 its reverse (68340102), we get a palindrome (88444488).

The spelling of 20104386 in words is "twenty million, one hundred four thousand, three hundred eighty-six".