20004096 has 108 divisors (see below), whose sum is σ = 61859616. Its totient is φ = 5621760.

The previous prime is 20004071. The next prime is 20004107. The reversal of 20004096 is 69040002.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 327906 + ... + 327966.

Almost surely, 2^20004096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30929808).

20004096 is an abundant number, since it is smaller than the sum of its proper divisors (41855520).

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

20004096 is an frugal number, since it uses more digits than its factorization.

20004096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20004096 is about 4472.5938782769. The cubic root of 20004096 is about 271.4602908189.

Multiplying 20004096 by its sum of digits (21), we get a square (420086016 = 20496²).

20004096 divided by its sum of digits (21) gives a square (952576 = 976²).

Adding to 20004096 its reverse (69040002), we get a palindrome (89044098).

The spelling of 20004096 in words is "twenty million, four thousand, ninety-six".