20002064 has 40 divisors (see below), whose sum is σ = 41390208. Its totient is φ = 9331200.

The previous prime is 20002061. The next prime is 20002067. The reversal of 20002064 is 46020002.

It is an interprime number because it is at equal distance from previous prime (20002061) and next prime (20002067).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40829 + ... + 41315.

Almost surely, 2^20002064 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 20002064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20695104).

20002064 is an abundant number, since it is smaller than the sum of its proper divisors (21388144).

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

20002064 is a wasteful number, since it uses less digits than its factorization.

20002064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20002064 is about 4472.3667112615. The cubic root of 20002064 is about 271.4510989349.

Adding to 20002064 its reverse (46020002), we get a palindrome (66022066).

The spelling of 20002064 in words is "twenty million, two thousand, sixty-four".