20004486 has 32 divisors (see below), whose sum is σ = 41665536. Its totient is φ = 6396000.

The previous prime is 20004451. The next prime is 20004487. The reversal of 20004486 is 68440002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23956 + ... + 24776.

It is an arithmetic number, because the mean of its divisors is an integer number (1302048).

Almost surely, 2^20004486 is an apocalyptic number.

20004486 is an abundant number, since it is smaller than the sum of its proper divisors (21661050).

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

20004486 is a wasteful number, since it uses less digits than its factorization.

20004486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20004486 is about 4472.6374769257. The cubic root of 20004486 is about 271.4620549380.

Adding to 20004486 its reverse (68440002), we get a palindrome (88444488).

The spelling of 20004486 in words is "twenty million, four thousand, four hundred eighty-six".