20860104 has 32 divisors (see below), whose sum is σ = 53262720. Its totient is φ = 6805056.

The previous prime is 20860097. The next prime is 20860163. The reversal of 20860104 is 40106802.

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, 8119 + ... + 10374.

It is an arithmetic number, because the mean of its divisors is an integer number (1664460).

Almost surely, 2^20860104 is an apocalyptic number.

20860104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20860104 is an abundant number, since it is smaller than the sum of its proper divisors (32402616).

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

20860104 is a wasteful number, since it uses less digits than its factorization.

20860104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549 (or 18545 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20860104 is about 4567.2862839984. The cubic root of 20860104 is about 275.2784133526.

Adding to 20860104 its reverse (40106802), we get a palindrome (60966906).

The spelling of 20860104 in words is "twenty million, eight hundred sixty thousand, one hundred four".