20113104 has 60 divisors (see below), whose sum is σ = 57128288. Its totient is φ = 6093120.

The previous prime is 20113099. The next prime is 20113123. The reversal of 20113104 is 40131102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20113104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4077 + ... + 7539.

Almost surely, 2^20113104 is an apocalyptic number.

20113104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20113104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28564144).

20113104 is an abundant number, since it is smaller than the sum of its proper divisors (37015184).

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

20113104 is a wasteful number, since it uses less digits than its factorization.

20113104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20113104 is about 4484.7635389171. The cubic root of 20113104 is about 271.9524859335.

Adding to 20113104 its reverse (40131102), we get a palindrome (60244206).

It can be divided in two parts, 2011 and 3104, that added together give a palindrome (5115).

The spelling of 20113104 in words is "twenty million, one hundred thirteen thousand, one hundred four".